[SF] Updates to not send hints without a present being followed

Updates the hint to be sent through a frame scheduling.
Reduce the number of callbacks to notifyExpectedPresentIfRequired
by making calls only through EventThread.
Timeout hint is sent directly without scheduling a frame
to avoid delay in sending the hint.
A hint through setTransactionState for ScheduleOnTx will
be in a follow up CL

BUG: 316615878
Test: atest NotifyExpectedPresentTest
Change-Id: I60f555d69626656901951808353f4a632e9b5e71
diff --git a/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp b/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp
index 1379665..fa31643 100644
--- a/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp
+++ b/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp
@@ -80,8 +80,7 @@
                             std::unique_ptr<EventThread>(mEventThread),
                             std::unique_ptr<EventThread>(mSFEventThread),
                             TestableSurfaceFlinger::DefaultDisplayMode{displayId},
-                            TestableSurfaceFlinger::SchedulerCallbackImpl::kMock,
-                            TestableSurfaceFlinger::VsyncTrackerCallbackImpl::kMock);
+                            TestableSurfaceFlinger::SchedulerCallbackImpl::kMock);
 }
 
 void DisplayTransactionTest::injectMockComposer(int virtualDisplayCount) {
diff --git a/services/surfaceflinger/tests/unittests/EventThreadTest.cpp b/services/surfaceflinger/tests/unittests/EventThreadTest.cpp
index 45db0c5..d5ec654 100644
--- a/services/surfaceflinger/tests/unittests/EventThreadTest.cpp
+++ b/services/surfaceflinger/tests/unittests/EventThreadTest.cpp
@@ -85,6 +85,7 @@
     bool throttleVsync(TimePoint, uid_t) override;
     Period getVsyncPeriod(uid_t) override;
     void resync() override;
+    void onExpectedPresentTimePosted(TimePoint) override;
 
     void setupEventThread();
     sp<MockEventThreadConnection> createConnection(ConnectionEventRecorder& recorder,
@@ -107,6 +108,7 @@
                                                       int32_t expectedConfigId,
                                                       nsecs_t expectedVsyncPeriod);
     void expectThrottleVsyncReceived(nsecs_t expectedTimestamp, uid_t);
+    void expectOnExpectedPresentTimePosted(nsecs_t expectedPresentTime);
     void expectUidFrameRateMappingEventReceivedByConnection(PhysicalDisplayId expectedDisplayId,
                                                             std::vector<FrameRateOverride>);
 
@@ -131,6 +133,7 @@
             mVSyncCallbackUnregisterRecorder;
     AsyncCallRecorder<void (*)()> mResyncCallRecorder;
     AsyncCallRecorder<void (*)(nsecs_t, uid_t)> mThrottleVsyncCallRecorder;
+    AsyncCallRecorder<void (*)(nsecs_t)> mOnExpectedPresentTimePostedRecorder;
     ConnectionEventRecorder mConnectionEventCallRecorder{0};
     ConnectionEventRecorder mThrottledConnectionEventCallRecorder{0};
 
@@ -190,6 +193,10 @@
     mResyncCallRecorder.recordCall();
 }
 
+void EventThreadTest::onExpectedPresentTimePosted(TimePoint expectedPresentTime) {
+    mOnExpectedPresentTimePostedRecorder.recordCall(expectedPresentTime.ns());
+}
+
 void EventThreadTest::setupEventThread() {
     mTokenManager = std::make_unique<frametimeline::impl::TokenManager>();
     mThread = std::make_unique<impl::EventThread>("EventThreadTest", mVsyncSchedule,
@@ -244,6 +251,12 @@
     EXPECT_EQ(uid, std::get<1>(args.value()));
 }
 
+void EventThreadTest::expectOnExpectedPresentTimePosted(nsecs_t expectedPresentTime) {
+    auto args = mOnExpectedPresentTimePostedRecorder.waitForCall();
+    ASSERT_TRUE(args.has_value());
+    EXPECT_EQ(expectedPresentTime, std::get<0>(args.value()));
+}
+
 void EventThreadTest::expectVsyncEventReceivedByConnection(
         const char* name, ConnectionEventRecorder& connectionEventRecorder,
         nsecs_t expectedTimestamp, unsigned expectedCount) {
@@ -410,6 +423,7 @@
     onVSyncEvent(123, 456, 789);
     expectThrottleVsyncReceived(456, mConnectionUid);
     expectVsyncEventReceivedByConnection(123, 1u);
+    expectOnExpectedPresentTimePosted(456);
 
     // EventThread is requesting one more callback due to VsyncRequest::SingleSuppressCallback
     expectVSyncCallbackScheduleReceived(true);
@@ -562,16 +576,19 @@
     onVSyncEvent(123, 456, 789);
     expectThrottleVsyncReceived(456, mConnectionUid);
     expectVsyncEventReceivedByConnection(123, 1u);
+    expectOnExpectedPresentTimePosted(456);
 
     // A second event should go to the same places.
     onVSyncEvent(456, 123, 0);
     expectThrottleVsyncReceived(123, mConnectionUid);
     expectVsyncEventReceivedByConnection(456, 2u);
+    expectOnExpectedPresentTimePosted(123);
 
     // A third event should go to the same places.
     onVSyncEvent(789, 777, 111);
     expectThrottleVsyncReceived(777, mConnectionUid);
     expectVsyncEventReceivedByConnection(789, 3u);
+    expectOnExpectedPresentTimePosted(777);
 }
 
 TEST_F(EventThreadTest, setVsyncRateTwoPostsEveryOtherEventToThatConnection) {
diff --git a/services/surfaceflinger/tests/unittests/LayerHistoryIntegrationTest.cpp b/services/surfaceflinger/tests/unittests/LayerHistoryIntegrationTest.cpp
index 734fddb..01762c1 100644
--- a/services/surfaceflinger/tests/unittests/LayerHistoryIntegrationTest.cpp
+++ b/services/surfaceflinger/tests/unittests/LayerHistoryIntegrationTest.cpp
@@ -165,12 +165,8 @@
                                                   DisplayModeId(0));
 
     mock::SchedulerCallback mSchedulerCallback;
-    mock::VsyncTrackerCallback mVsyncTrackerCallback;
-
     TestableSurfaceFlinger mFlinger;
-
-    TestableScheduler* mScheduler =
-            new TestableScheduler(mSelector, mFlinger, mSchedulerCallback, mVsyncTrackerCallback);
+    TestableScheduler* mScheduler = new TestableScheduler(mSelector, mFlinger, mSchedulerCallback);
 };
 
 namespace {
diff --git a/services/surfaceflinger/tests/unittests/LayerHistoryTest.cpp b/services/surfaceflinger/tests/unittests/LayerHistoryTest.cpp
index 9456e37..bc06a31 100644
--- a/services/surfaceflinger/tests/unittests/LayerHistoryTest.cpp
+++ b/services/surfaceflinger/tests/unittests/LayerHistoryTest.cpp
@@ -146,11 +146,8 @@
                                                   DisplayModeId(0));
 
     mock::SchedulerCallback mSchedulerCallback;
-
-    mock::VsyncTrackerCallback mVsyncTrackerCallback;
     TestableSurfaceFlinger mFlinger;
-    TestableScheduler* mScheduler =
-            new TestableScheduler(mSelector, mFlinger, mSchedulerCallback, mVsyncTrackerCallback);
+    TestableScheduler* mScheduler = new TestableScheduler(mSelector, mFlinger, mSchedulerCallback);
 };
 
 namespace {
diff --git a/services/surfaceflinger/tests/unittests/LayerInfoTest.cpp b/services/surfaceflinger/tests/unittests/LayerInfoTest.cpp
index 22cfbd8..9fe9ee8 100644
--- a/services/surfaceflinger/tests/unittests/LayerInfoTest.cpp
+++ b/services/surfaceflinger/tests/unittests/LayerInfoTest.cpp
@@ -64,10 +64,8 @@
                                                                               HI_FPS)),
                                                   DisplayModeId(0));
     mock::SchedulerCallback mSchedulerCallback;
-    mock::VsyncTrackerCallback mVsyncTrackerCallback;
     TestableSurfaceFlinger mFlinger;
-    TestableScheduler* mScheduler =
-            new TestableScheduler(mSelector, mFlinger, mSchedulerCallback, mVsyncTrackerCallback);
+    TestableScheduler* mScheduler = new TestableScheduler(mSelector, mFlinger, mSchedulerCallback);
 };
 
 namespace {
diff --git a/services/surfaceflinger/tests/unittests/MessageQueueTest.cpp b/services/surfaceflinger/tests/unittests/MessageQueueTest.cpp
index 249ed40..f5661fc 100644
--- a/services/surfaceflinger/tests/unittests/MessageQueueTest.cpp
+++ b/services/surfaceflinger/tests/unittests/MessageQueueTest.cpp
@@ -41,6 +41,7 @@
         return {};
     }
     void sample() override {}
+    void sendNotifyExpectedPresentHint(PhysicalDisplayId) {}
 } gNoOpCompositor;
 
 class TestableMessageQueue : public impl::MessageQueue {
diff --git a/services/surfaceflinger/tests/unittests/SchedulerTest.cpp b/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
index 6986689..10c5848 100644
--- a/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
+++ b/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
@@ -95,10 +95,8 @@
                                                   kDisplay1Mode60->getId());
 
     mock::SchedulerCallback mSchedulerCallback;
-    mock::VsyncTrackerCallback mVsyncTrackerCallback;
     TestableSurfaceFlinger mFlinger;
-    TestableScheduler* mScheduler =
-            new TestableScheduler{mSelector, mFlinger, mSchedulerCallback, mVsyncTrackerCallback};
+    TestableScheduler* mScheduler = new TestableScheduler{mSelector, mFlinger, mSchedulerCallback};
     surfaceflinger::frontend::LayerHierarchyBuilder mLayerHierarchyBuilder;
 
     ConnectionHandle mConnectionHandle;
@@ -516,6 +514,7 @@
         }
 
         void sample() override {}
+        void sendNotifyExpectedPresentHint(PhysicalDisplayId) override {}
     } compositor(*mScheduler);
 
     mScheduler->doFrameSignal(compositor, VsyncId(42));
@@ -568,7 +567,7 @@
                                                         frameRate.getPeriodNsecs())}));
     std::shared_ptr<VSyncPredictor> vrrTracker =
             std::make_shared<VSyncPredictor>(kMode, kHistorySize, kMinimumSamplesForPrediction,
-                                             kOutlierTolerancePercent, mVsyncTrackerCallback);
+                                             kOutlierTolerancePercent);
     std::shared_ptr<RefreshRateSelector> vrrSelectorPtr =
             std::make_shared<RefreshRateSelector>(makeModes(kMode), kMode->getId());
     TestableScheduler scheduler{std::make_unique<android::mock::VsyncController>(),
@@ -576,8 +575,7 @@
                                 vrrSelectorPtr,
                                 mFlinger.getFactory(),
                                 mFlinger.getTimeStats(),
-                                mSchedulerCallback,
-                                mVsyncTrackerCallback};
+                                mSchedulerCallback};
 
     scheduler.registerDisplay(kMode->getPhysicalDisplayId(), vrrSelectorPtr, vrrTracker);
     vrrSelectorPtr->setActiveMode(kMode->getId(), frameRate);
diff --git a/services/surfaceflinger/tests/unittests/SurfaceFlinger_NotifyExpectedPresentTest.cpp b/services/surfaceflinger/tests/unittests/SurfaceFlinger_NotifyExpectedPresentTest.cpp
index 7206e29..91b9018 100644
--- a/services/surfaceflinger/tests/unittests/SurfaceFlinger_NotifyExpectedPresentTest.cpp
+++ b/services/surfaceflinger/tests/unittests/SurfaceFlinger_NotifyExpectedPresentTest.cpp
@@ -17,31 +17,81 @@
 #undef LOG_TAG
 #define LOG_TAG "LibSurfaceFlingerUnittests"
 
+#include <gui/SurfaceComposerClient.h>
 #include "DisplayTransactionTestHelpers.h"
 
 namespace android {
 
 using FakeHwcDisplayInjector = TestableSurfaceFlinger::FakeHwcDisplayInjector;
+using android::hardware::graphics::composer::V2_1::Error;
 
 class NotifyExpectedPresentTest : public DisplayTransactionTest {
 public:
     void SetUp() override {
-        mDisplay = PrimaryDisplayVariant::makeFakeExistingDisplayInjector(this).inject();
-        FakeHwcDisplayInjector(mDisplay->getPhysicalId(), hal::DisplayType::PHYSICAL, kIsPrimary)
+        const auto display = PrimaryDisplayVariant::makeFakeExistingDisplayInjector(this).inject();
+        mPhysicalDisplayId = display->getPhysicalId();
+        FakeHwcDisplayInjector(mPhysicalDisplayId, hal::DisplayType::PHYSICAL, /*isPrimary=*/true)
                 .setPowerMode(hal::PowerMode::ON)
                 .inject(&mFlinger, mComposer);
+
+        ASSERT_NO_FATAL_FAILURE(mFlinger.setNotifyExpectedPresentData(mPhysicalDisplayId,
+                                                                      TimePoint::fromNs(0),
+                                                                      kFps60Hz));
+        mCompositor = std::make_unique<Compositor>(mPhysicalDisplayId, mFlinger);
     }
 
 protected:
-    sp<DisplayDevice> mDisplay;
-    static constexpr bool kIsPrimary = true;
-    static constexpr hal::HWDisplayId HWC_DISPLAY_ID =
-            FakeHwcDisplayInjector::DEFAULT_HWC_DISPLAY_ID;
-};
+    struct Compositor final : ICompositor {
+        explicit Compositor(PhysicalDisplayId displayId, TestableSurfaceFlinger& surfaceFlinger)
+              : displayId(displayId), surfaceFlinger(surfaceFlinger) {}
 
-TEST_F(NotifyExpectedPresentTest, notifyExpectedPresentTimeout) {
-    const auto physicDisplayId = mDisplay->getPhysicalId();
-    auto expectedPresentTime = systemTime() + ms2ns(10);
+        void sendNotifyExpectedPresentHint(PhysicalDisplayId id) override {
+            surfaceFlinger.sendNotifyExpectedPresentHint(id);
+        }
+
+        bool commit(PhysicalDisplayId, const scheduler::FrameTargets&) override {
+            return committed;
+        }
+
+        CompositeResultsPerDisplay composite(PhysicalDisplayId pacesetterId,
+                                             const scheduler::FrameTargeters& targeters) override {
+            pacesetterIds.composite = pacesetterId;
+            CompositeResultsPerDisplay results;
+
+            for (const auto& [id, targeter] : targeters) {
+                vsyncIds.composite.emplace_back(id, targeter->target().vsyncId());
+                surfaceFlinger.resetNotifyExpectedPresentHintState(pacesetterId);
+                results.try_emplace(id,
+                                    CompositeResult{.compositionCoverage =
+                                                            CompositionCoverage::Hwc});
+            }
+
+            return results;
+        }
+
+        void sample() override {}
+        void configure() override {}
+
+        struct {
+            PhysicalDisplayId commit;
+            PhysicalDisplayId composite;
+        } pacesetterIds;
+
+        using VsyncIds = std::vector<std::pair<PhysicalDisplayId, VsyncId>>;
+        struct {
+            VsyncIds commit;
+            VsyncIds composite;
+        } vsyncIds;
+
+        bool committed = true;
+        PhysicalDisplayId displayId;
+        TestableSurfaceFlinger& surfaceFlinger;
+    };
+
+    PhysicalDisplayId mPhysicalDisplayId;
+    std::unique_ptr<Compositor> mCompositor;
+    static constexpr hal::HWDisplayId kHwcDisplayId =
+            FakeHwcDisplayInjector::DEFAULT_HWC_DISPLAY_ID;
     static constexpr Fps kFps60Hz = 60_Hz;
     static constexpr int32_t kFrameInterval5HzNs = static_cast<Fps>(5_Hz).getPeriodNsecs();
     static constexpr int32_t kFrameInterval60HzNs = kFps60Hz.getPeriodNsecs();
@@ -49,89 +99,171 @@
     static constexpr Period kVsyncPeriod =
             Period::fromNs(static_cast<Fps>(240_Hz).getPeriodNsecs());
     static constexpr Period kTimeoutNs = Period::fromNs(kFrameInterval5HzNs);
-    static constexpr auto kLastExpectedPresentTimestamp = TimePoint::fromNs(0);
+};
 
-    ASSERT_NO_FATAL_FAILURE(mFlinger.setNotifyExpectedPresentData(physicDisplayId,
-                                                                  kLastExpectedPresentTimestamp,
-                                                                  kFps60Hz));
-
-    {
-        // Very first ExpectedPresent after idle, no previous timestamp
-        EXPECT_CALL(*mComposer,
-                    notifyExpectedPresent(HWC_DISPLAY_ID, expectedPresentTime,
-                                          kFrameInterval60HzNs))
-                .WillOnce(Return(Error::NONE));
-        mFlinger.notifyExpectedPresentIfRequired(physicDisplayId, kVsyncPeriod,
-                                                 TimePoint::fromNs(expectedPresentTime), kFps60Hz,
-                                                 kTimeoutNs);
-    }
-    {
-        // Absent timeoutNs
+TEST_F(NotifyExpectedPresentTest, noNotifyExpectedPresentHintCall_absentTimeout) {
+    auto expectedPresentTime = systemTime() + ms2ns(10);
+    ASSERT_NO_FATAL_FAILURE(
+            mFlinger.setNotifyExpectedPresentData(mPhysicalDisplayId,
+                                                  TimePoint::fromNs(expectedPresentTime),
+                                                  kFps60Hz));
+    EXPECT_CALL(*mComposer, notifyExpectedPresent(kHwcDisplayId, _, _)).Times(0);
+    for (int i = 0; i < 5; i++) {
         expectedPresentTime += 2 * kFrameInterval5HzNs;
-        EXPECT_CALL(*mComposer, notifyExpectedPresent(HWC_DISPLAY_ID, _, _)).Times(0);
-        mFlinger.notifyExpectedPresentIfRequired(physicDisplayId, kVsyncPeriod,
+        mFlinger.notifyExpectedPresentIfRequired(mPhysicalDisplayId, kVsyncPeriod,
                                                  TimePoint::fromNs(expectedPresentTime), kFps60Hz,
                                                  /*timeoutOpt*/ std::nullopt);
+        EXPECT_TRUE(
+                mFlinger.verifyLastExpectedPresentTime(mPhysicalDisplayId, expectedPresentTime));
+        ASSERT_TRUE(mFlinger.verifyHintStatusIsStart(mPhysicalDisplayId));
     }
+}
+
+TEST_F(NotifyExpectedPresentTest, notifyExpectedPresentHint_zeroTimeout) {
+    auto expectedPresentTime = systemTime() + ms2ns(10);
     {
-        // Timeout is 0
-        expectedPresentTime += kFrameInterval60HzNs;
+        // Very first ExpectedPresent after idle, no previous timestamp.
         EXPECT_CALL(*mComposer,
-                    notifyExpectedPresent(HWC_DISPLAY_ID, expectedPresentTime,
-                                          kFrameInterval60HzNs))
+                    notifyExpectedPresent(kHwcDisplayId, expectedPresentTime, kFrameInterval60HzNs))
                 .WillOnce(Return(Error::NONE));
-        mFlinger.notifyExpectedPresentIfRequired(physicDisplayId, kVsyncPeriod,
-                                                 TimePoint::fromNs(expectedPresentTime), kFps60Hz,
-                                                 Period::fromNs(0));
-    }
-    {
-        // ExpectedPresent is after the timeoutNs
-        expectedPresentTime += 2 * kFrameInterval5HzNs;
-        EXPECT_CALL(*mComposer,
-                    notifyExpectedPresent(HWC_DISPLAY_ID, expectedPresentTime,
-                                          kFrameInterval60HzNs))
-                .WillOnce(Return(Error::NONE));
-        mFlinger.notifyExpectedPresentIfRequired(physicDisplayId, kVsyncPeriod,
+        mFlinger.notifyExpectedPresentIfRequired(mPhysicalDisplayId, kVsyncPeriod,
                                                  TimePoint::fromNs(expectedPresentTime), kFps60Hz,
                                                  kTimeoutNs);
+        ASSERT_TRUE(mFlinger.verifyHintIsSent(mPhysicalDisplayId));
+
+        // Present frame
+        mFlinger.scheduler()->doFrameSignal(*mCompositor, VsyncId{42});
+        // Present happens and NotifyExpectedPresentHintStatus is start.
+        ASSERT_TRUE(mFlinger.verifyHintStatusIsStart(mPhysicalDisplayId));
+    }
+    {
+        mCompositor->committed = false;
+        expectedPresentTime += kFrameInterval60HzNs;
+        EXPECT_CALL(*mComposer,
+                    notifyExpectedPresent(kHwcDisplayId, expectedPresentTime, kFrameInterval60HzNs))
+                .WillOnce(Return(Error::NONE));
+        mFlinger.notifyExpectedPresentIfRequired(mPhysicalDisplayId, kVsyncPeriod,
+                                                 TimePoint::fromNs(expectedPresentTime), kFps60Hz,
+                                                 Period::fromNs(0));
+        EXPECT_TRUE(
+                mFlinger.verifyLastExpectedPresentTime(mPhysicalDisplayId, expectedPresentTime));
+        ASSERT_TRUE(mFlinger.verifyHintIsSent(mPhysicalDisplayId));
+        mFlinger.scheduler()->doFrameSignal(*mCompositor, VsyncId{42});
+        // Hint sent
+        ASSERT_TRUE(mFlinger.verifyHintIsSent(mPhysicalDisplayId));
+    }
+    {
+        expectedPresentTime += kFrameInterval60HzNs;
+        EXPECT_CALL(*mComposer,
+                    notifyExpectedPresent(kHwcDisplayId, expectedPresentTime, kFrameInterval60HzNs))
+                .WillOnce(Return(Error::NONE));
+        mFlinger.notifyExpectedPresentIfRequired(mPhysicalDisplayId, kVsyncPeriod,
+                                                 TimePoint::fromNs(expectedPresentTime), kFps60Hz,
+                                                 Period::fromNs(0));
+        EXPECT_TRUE(
+                mFlinger.verifyLastExpectedPresentTime(mPhysicalDisplayId, expectedPresentTime));
+        // Hint is executed
+        ASSERT_TRUE(mFlinger.verifyHintIsSent(mPhysicalDisplayId));
+        mFlinger.scheduler()->doFrameSignal(*mCompositor, VsyncId{42});
+        ASSERT_TRUE(mFlinger.verifyHintIsSent(mPhysicalDisplayId));
+    }
+}
+
+TEST_F(NotifyExpectedPresentTest, notifyExpectedPresentTimeout) {
+    auto expectedPresentTime = systemTime() + ms2ns(10);
+    {
+        // Very first ExpectedPresent after idle, no previous timestamp
+        mCompositor->committed = false;
+        EXPECT_CALL(*mComposer,
+                    notifyExpectedPresent(kHwcDisplayId, expectedPresentTime, kFrameInterval60HzNs))
+                .WillOnce(Return(Error::NONE));
+        mFlinger.notifyExpectedPresentIfRequired(mPhysicalDisplayId, kVsyncPeriod,
+                                                 TimePoint::fromNs(expectedPresentTime), kFps60Hz,
+                                                 kTimeoutNs);
+        ASSERT_TRUE(mFlinger.verifyHintIsSent(mPhysicalDisplayId));
+        mFlinger.scheduler()->doFrameSignal(*mCompositor, VsyncId{42});
+        ASSERT_TRUE(mFlinger.verifyHintIsSent(mPhysicalDisplayId));
+    }
+    {
+        // ExpectedPresentTime is after the timeoutNs
+        mCompositor->committed = true;
+        expectedPresentTime += 2 * kFrameInterval5HzNs;
+        EXPECT_CALL(*mComposer, notifyExpectedPresent(kHwcDisplayId, _, _)).Times(0);
+        mFlinger.notifyExpectedPresentIfRequired(mPhysicalDisplayId, kVsyncPeriod,
+                                                 TimePoint::fromNs(expectedPresentTime), kFps60Hz,
+                                                 kTimeoutNs);
+        EXPECT_TRUE(
+                mFlinger.verifyLastExpectedPresentTime(mPhysicalDisplayId, expectedPresentTime));
+        ASSERT_TRUE(mFlinger.verifyHintIsSent(mPhysicalDisplayId));
+        mFlinger.scheduler()->doFrameSignal(*mCompositor, VsyncId{42});
+        // Present happens notifyExpectedPresentHintStatus is Start
+        ASSERT_TRUE(mFlinger.verifyHintStatusIsStart(mPhysicalDisplayId));
+
+        // Another expectedPresent after timeout
+        expectedPresentTime += 2 * kFrameInterval5HzNs;
+        EXPECT_CALL(*mComposer,
+                    notifyExpectedPresent(kHwcDisplayId, expectedPresentTime, kFrameInterval60HzNs))
+                .WillOnce(Return(Error::NONE));
+        mFlinger.notifyExpectedPresentIfRequired(mPhysicalDisplayId, kVsyncPeriod,
+                                                 TimePoint::fromNs(expectedPresentTime), kFps60Hz,
+                                                 kTimeoutNs);
+        EXPECT_TRUE(
+                mFlinger.verifyLastExpectedPresentTime(mPhysicalDisplayId, expectedPresentTime));
+        ASSERT_TRUE(mFlinger.verifyHintIsSent(mPhysicalDisplayId));
+        mFlinger.scheduler()->doFrameSignal(*mCompositor, VsyncId{42});
+        ASSERT_TRUE(mFlinger.verifyHintStatusIsStart(mPhysicalDisplayId));
     }
     {
         // ExpectedPresent has not changed
-        EXPECT_CALL(*mComposer, notifyExpectedPresent(HWC_DISPLAY_ID, _, _)).Times(0);
-        mFlinger.notifyExpectedPresentIfRequired(physicDisplayId, kVsyncPeriod,
+        EXPECT_CALL(*mComposer, notifyExpectedPresent(kHwcDisplayId, _, _)).Times(0);
+        mFlinger.notifyExpectedPresentIfRequired(mPhysicalDisplayId, kVsyncPeriod,
                                                  TimePoint::fromNs(expectedPresentTime), kFps60Hz,
                                                  kTimeoutNs);
+        EXPECT_TRUE(
+                mFlinger.verifyLastExpectedPresentTime(mPhysicalDisplayId, expectedPresentTime));
+        ASSERT_TRUE(mFlinger.verifyHintStatusIsStart(mPhysicalDisplayId));
+        mFlinger.scheduler()->doFrameSignal(*mCompositor, VsyncId{42});
+        ASSERT_TRUE(mFlinger.verifyHintStatusIsStart(mPhysicalDisplayId));
     }
     {
-        // ExpectedPresent is after the last reported ExpectedPresent.
+        // ExpectedPresent is after the last reported ExpectedPresent and within timeout.
         expectedPresentTime += kFrameInterval60HzNs;
-        EXPECT_CALL(*mComposer, notifyExpectedPresent(HWC_DISPLAY_ID, _, _)).Times(0);
-        mFlinger.notifyExpectedPresentIfRequired(physicDisplayId, kVsyncPeriod,
+        EXPECT_CALL(*mComposer, notifyExpectedPresent(kHwcDisplayId, _, _)).Times(0);
+        mFlinger.notifyExpectedPresentIfRequired(mPhysicalDisplayId, kVsyncPeriod,
                                                  TimePoint::fromNs(expectedPresentTime), kFps60Hz,
                                                  kTimeoutNs);
+        EXPECT_TRUE(
+                mFlinger.verifyLastExpectedPresentTime(mPhysicalDisplayId, expectedPresentTime));
+        ASSERT_TRUE(mFlinger.verifyHintStatusIsStart(mPhysicalDisplayId));
+        mFlinger.scheduler()->doFrameSignal(*mCompositor, VsyncId{42});
+        ASSERT_TRUE(mFlinger.verifyHintStatusIsStart(mPhysicalDisplayId));
     }
     {
         // ExpectedPresent is before the last reported ExpectedPresent but after the timeoutNs,
         // representing we changed our decision and want to present earlier than previously
         // reported.
+        mCompositor->committed = false;
         expectedPresentTime -= kFrameInterval120HzNs;
         EXPECT_CALL(*mComposer,
-                    notifyExpectedPresent(HWC_DISPLAY_ID, expectedPresentTime,
-                                          kFrameInterval60HzNs))
+                    notifyExpectedPresent(kHwcDisplayId, expectedPresentTime, kFrameInterval60HzNs))
                 .WillOnce(Return(Error::NONE));
-        mFlinger.notifyExpectedPresentIfRequired(physicDisplayId, kVsyncPeriod,
+        mFlinger.notifyExpectedPresentIfRequired(mPhysicalDisplayId, kVsyncPeriod,
                                                  TimePoint::fromNs(expectedPresentTime), kFps60Hz,
                                                  kTimeoutNs);
+        EXPECT_TRUE(
+                mFlinger.verifyLastExpectedPresentTime(mPhysicalDisplayId, expectedPresentTime));
+        ASSERT_TRUE(mFlinger.verifyHintIsScheduledOnPresent(mPhysicalDisplayId));
+        mFlinger.scheduler()->doFrameSignal(*mCompositor, VsyncId{42});
+        ASSERT_TRUE(mFlinger.verifyHintIsSent(mPhysicalDisplayId));
     }
 }
 
 TEST_F(NotifyExpectedPresentTest, notifyExpectedPresentRenderRateChanged) {
-    const auto physicDisplayId = mDisplay->getPhysicalId();
     const auto now = systemTime();
     auto expectedPresentTime = now;
     static constexpr Period kTimeoutNs = Period::fromNs(static_cast<Fps>(1_Hz).getPeriodNsecs());
 
-    ASSERT_NO_FATAL_FAILURE(mFlinger.setNotifyExpectedPresentData(physicDisplayId,
+    ASSERT_NO_FATAL_FAILURE(mFlinger.setNotifyExpectedPresentData(mPhysicalDisplayId,
                                                                   TimePoint::fromNs(now),
                                                                   Fps::fromValue(0)));
     static constexpr int32_t kFrameIntervalNs120Hz = static_cast<Fps>(120_Hz).getPeriodNsecs();
@@ -147,7 +279,7 @@
 
     struct FrameRateIntervalTestData {
         int32_t frameIntervalNs;
-        bool callExpectedPresent;
+        bool callNotifyExpectedPresentHint;
     };
     const std::vector<FrameRateIntervalTestData> frameIntervals = {
             {kFrameIntervalNs60Hz, true},  {kFrameIntervalNs96Hz, true},
@@ -159,21 +291,35 @@
             {kFrameIntervalNs20Hz, false}, {kFrameIntervalNs120Hz, true},
     };
 
-    for (const auto& [frameIntervalNs, callExpectedPresent] : frameIntervals) {
-        {
-            expectedPresentTime += frameIntervalNs;
-            if (callExpectedPresent) {
-                EXPECT_CALL(*mComposer,
-                            notifyExpectedPresent(HWC_DISPLAY_ID, expectedPresentTime,
-                                                  frameIntervalNs))
-                        .WillOnce(Return(Error::NONE));
-            } else {
-                EXPECT_CALL(*mComposer, notifyExpectedPresent(HWC_DISPLAY_ID, _, _)).Times(0);
-            }
-            mFlinger.notifyExpectedPresentIfRequired(physicDisplayId, kVsyncPeriod,
-                                                     TimePoint::fromNs(expectedPresentTime),
-                                                     Fps::fromPeriodNsecs(frameIntervalNs),
-                                                     kTimeoutNs);
+    for (size_t i = 0; i < frameIntervals.size(); i++) {
+        const auto& [frameIntervalNs, callNotifyExpectedPresentHint] = frameIntervals[i];
+        expectedPresentTime += frameIntervalNs;
+        mFlinger.notifyExpectedPresentIfRequired(mPhysicalDisplayId, kVsyncPeriod,
+                                                 TimePoint::fromNs(expectedPresentTime),
+                                                 Fps::fromPeriodNsecs(frameIntervalNs), kTimeoutNs);
+
+        if (callNotifyExpectedPresentHint) {
+            mCompositor->committed = false;
+            ASSERT_TRUE(mFlinger.verifyHintIsScheduledOnPresent(mPhysicalDisplayId))
+                    << "Hint not scheduled for frameInterval " << frameIntervalNs << " at index "
+                    << i;
+            EXPECT_CALL(*mComposer,
+                        notifyExpectedPresent(kHwcDisplayId, expectedPresentTime, frameIntervalNs))
+                    .WillOnce(Return(Error::NONE));
+        } else {
+            // Only lastExpectedPresentTime is updated
+            EXPECT_TRUE(
+                    mFlinger.verifyLastExpectedPresentTime(mPhysicalDisplayId, expectedPresentTime))
+                    << "LastExpectedPresentTime for frameInterval " << frameIntervalNs
+                    << "at index " << i << " did not match for frameInterval " << frameIntervalNs;
+            EXPECT_CALL(*mComposer, notifyExpectedPresent(kHwcDisplayId, _, _)).Times(0);
+        }
+        mFlinger.scheduler()->doFrameSignal(*mCompositor, VsyncId{42});
+
+        if (callNotifyExpectedPresentHint) {
+            // Present resumes the calls to the notifyExpectedPresentHint.
+            mCompositor->committed = true;
+            mFlinger.scheduler()->doFrameSignal(*mCompositor, VsyncId{42});
         }
     }
 }
diff --git a/services/surfaceflinger/tests/unittests/TestableScheduler.cpp b/services/surfaceflinger/tests/unittests/TestableScheduler.cpp
index e0b7366..7b92a5b 100644
--- a/services/surfaceflinger/tests/unittests/TestableScheduler.cpp
+++ b/services/surfaceflinger/tests/unittests/TestableScheduler.cpp
@@ -21,11 +21,10 @@
 
 TestableScheduler::TestableScheduler(RefreshRateSelectorPtr selectorPtr,
                                      TestableSurfaceFlinger& testableSurfaceFlinger,
-                                     ISchedulerCallback& callback,
-                                     IVsyncTrackerCallback& vsyncTrackerCallback)
+                                     ISchedulerCallback& callback)
       : TestableScheduler(std::make_unique<android::mock::VsyncController>(),
                           std::make_shared<android::mock::VSyncTracker>(), std::move(selectorPtr),
                           testableSurfaceFlinger.getFactory(),
-                          testableSurfaceFlinger.getTimeStats(), callback, vsyncTrackerCallback) {}
+                          testableSurfaceFlinger.getTimeStats(), callback) {}
 
 } // namespace android::scheduler
diff --git a/services/surfaceflinger/tests/unittests/TestableScheduler.h b/services/surfaceflinger/tests/unittests/TestableScheduler.h
index 6213713..25a85df 100644
--- a/services/surfaceflinger/tests/unittests/TestableScheduler.h
+++ b/services/surfaceflinger/tests/unittests/TestableScheduler.h
@@ -41,18 +41,16 @@
 class TestableScheduler : public Scheduler, private ICompositor {
 public:
     TestableScheduler(RefreshRateSelectorPtr selectorPtr,
-                      TestableSurfaceFlinger& testableSurfaceFlinger, ISchedulerCallback& callback,
-                      IVsyncTrackerCallback& vsyncTrackerCallback);
+                      TestableSurfaceFlinger& testableSurfaceFlinger, ISchedulerCallback& callback);
 
     TestableScheduler(std::unique_ptr<VsyncController> controller,
                       std::shared_ptr<VSyncTracker> tracker, RefreshRateSelectorPtr selectorPtr,
                       surfaceflinger::Factory& factory, TimeStats& timeStats,
-                      ISchedulerCallback& schedulerCallback,
-                      IVsyncTrackerCallback& vsyncTrackerCallback)
+                      ISchedulerCallback& schedulerCallback)
           : Scheduler(*this, schedulerCallback,
                       (FeatureFlags)Feature::kContentDetection |
                               Feature::kSmallDirtyContentDetection,
-                      factory, selectorPtr->getActiveMode().fps, timeStats, vsyncTrackerCallback) {
+                      factory, selectorPtr->getActiveMode().fps, timeStats) {
         const auto displayId = selectorPtr->getActiveMode().modePtr->getPhysicalDisplayId();
         registerDisplay(displayId, std::move(selectorPtr), std::move(controller),
                         std::move(tracker));
@@ -210,6 +208,7 @@
         return {};
     }
     void sample() override {}
+    void sendNotifyExpectedPresentHint(PhysicalDisplayId) override {}
 };
 
 } // namespace android::scheduler
diff --git a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
index 4e0b5af..6a916a4 100644
--- a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
+++ b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
@@ -53,7 +53,6 @@
 #include "mock/MockFrameTimeline.h"
 #include "mock/MockFrameTracer.h"
 #include "mock/MockSchedulerCallback.h"
-#include "mock/MockVsyncTrackerCallback.h"
 #include "mock/system/window/MockNativeWindow.h"
 
 #include "Scheduler/VSyncTracker.h"
@@ -205,8 +204,6 @@
 
     enum class SchedulerCallbackImpl { kNoOp, kMock };
 
-    enum class VsyncTrackerCallbackImpl { kNoOp, kMock };
-
     struct DefaultDisplayMode {
         // The ID of the injected RefreshRateSelector and its default display mode.
         PhysicalDisplayId displayId;
@@ -220,14 +217,13 @@
 
     TimeStats& getTimeStats() { return *mFlinger->mTimeStats; }
 
-    void setupScheduler(
-            std::unique_ptr<scheduler::VsyncController> vsyncController,
-            std::shared_ptr<scheduler::VSyncTracker> vsyncTracker,
-            std::unique_ptr<EventThread> appEventThread, std::unique_ptr<EventThread> sfEventThread,
-            DisplayModesVariant modesVariant,
-            SchedulerCallbackImpl callbackImpl = SchedulerCallbackImpl::kNoOp,
-            VsyncTrackerCallbackImpl vsyncTrackerCallbackImpl = VsyncTrackerCallbackImpl::kNoOp,
-            bool useNiceMock = false) {
+    void setupScheduler(std::unique_ptr<scheduler::VsyncController> vsyncController,
+                        std::shared_ptr<scheduler::VSyncTracker> vsyncTracker,
+                        std::unique_ptr<EventThread> appEventThread,
+                        std::unique_ptr<EventThread> sfEventThread,
+                        DisplayModesVariant modesVariant,
+                        SchedulerCallbackImpl callbackImpl = SchedulerCallbackImpl::kNoOp,
+                        bool useNiceMock = false) {
         RefreshRateSelectorPtr selectorPtr = ftl::match(
                 modesVariant,
                 [](DefaultDisplayMode arg) {
@@ -245,12 +241,6 @@
                 ? static_cast<ISchedulerCallback&>(mNoOpSchedulerCallback)
                 : static_cast<ISchedulerCallback&>(mSchedulerCallback);
 
-        using VsyncTrackerCallback = scheduler::IVsyncTrackerCallback;
-        VsyncTrackerCallback& vsyncTrackerCallback =
-                vsyncTrackerCallbackImpl == VsyncTrackerCallbackImpl::kNoOp
-                ? static_cast<VsyncTrackerCallback&>(mNoOpVsyncTrackerCallback)
-                : static_cast<VsyncTrackerCallback&>(mVsyncTrackerCallback);
-
         if (useNiceMock) {
             mScheduler =
                     new testing::NiceMock<scheduler::TestableScheduler>(std::move(vsyncController),
@@ -258,14 +248,12 @@
                                                                         std::move(selectorPtr),
                                                                         mFactory,
                                                                         *mFlinger->mTimeStats,
-                                                                        schedulerCallback,
-                                                                        vsyncTrackerCallback);
+                                                                        schedulerCallback);
         } else {
             mScheduler = new scheduler::TestableScheduler(std::move(vsyncController),
                                                           std::move(vsyncTracker),
                                                           std::move(selectorPtr), mFactory,
-                                                          *mFlinger->mTimeStats, schedulerCallback,
-                                                          vsyncTrackerCallback);
+                                                          *mFlinger->mTimeStats, schedulerCallback);
         }
 
         mScheduler->initVsync(*mTokenManager, 0ms);
@@ -307,8 +295,7 @@
         EXPECT_CALL(*vsyncTracker, nextAnticipatedVSyncTimeFrom(_, _)).WillRepeatedly(Return(0));
         setupScheduler(std::move(vsyncController), std::move(vsyncTracker), std::move(eventThread),
                        std::move(sfEventThread), DefaultDisplayMode{options.displayId},
-                       SchedulerCallbackImpl::kNoOp, VsyncTrackerCallbackImpl::kNoOp,
-                       options.useNiceMock);
+                       SchedulerCallbackImpl::kNoOp, options.useNiceMock);
     }
 
     void resetScheduler(scheduler::Scheduler* scheduler) { mFlinger->mScheduler.reset(scheduler); }
@@ -698,6 +685,36 @@
                                                   frameInterval, timeoutOpt);
     }
 
+    void sendNotifyExpectedPresentHint(PhysicalDisplayId displayId) {
+        ftl::FakeGuard guard(kMainThreadContext);
+        mFlinger->sendNotifyExpectedPresentHint(displayId);
+    }
+
+    bool verifyHintIsScheduledOnPresent(PhysicalDisplayId displayId) {
+        return mFlinger->mNotifyExpectedPresentMap.at(displayId).hintStatus ==
+                SurfaceFlinger::NotifyExpectedPresentHintStatus::ScheduleOnPresent;
+    }
+
+    bool verifyHintIsSent(PhysicalDisplayId displayId) {
+        return mFlinger->mNotifyExpectedPresentMap.at(displayId).hintStatus ==
+                SurfaceFlinger::NotifyExpectedPresentHintStatus::Sent;
+    }
+
+    bool verifyHintStatusIsStart(PhysicalDisplayId displayId) {
+        return mFlinger->mNotifyExpectedPresentMap.at(displayId).hintStatus ==
+                SurfaceFlinger::NotifyExpectedPresentHintStatus::Start;
+    }
+
+    bool verifyHintStatusIsScheduledOnTx(PhysicalDisplayId displayId) {
+        return mFlinger->mNotifyExpectedPresentMap.at(displayId).hintStatus ==
+                SurfaceFlinger::NotifyExpectedPresentHintStatus::ScheduleOnTx;
+    }
+
+    bool verifyLastExpectedPresentTime(PhysicalDisplayId displayId, nsecs_t expectedPresentTime) {
+        return mFlinger->mNotifyExpectedPresentMap.at(displayId)
+                       .lastExpectedPresentTimestamp.ns() == expectedPresentTime;
+    }
+
     void setNotifyExpectedPresentData(PhysicalDisplayId displayId,
                                       TimePoint lastExpectedPresentTimestamp,
                                       Fps lastFrameInterval) {
@@ -706,6 +723,11 @@
         displayData.lastFrameInterval = lastFrameInterval;
     }
 
+    void resetNotifyExpectedPresentHintState(PhysicalDisplayId displayId) {
+        mFlinger->mNotifyExpectedPresentMap.at(displayId).hintStatus =
+                SurfaceFlinger::NotifyExpectedPresentHintStatus::Start;
+    }
+
     ~TestableSurfaceFlinger() {
         // All these pointer and container clears help ensure that GMock does
         // not report a leaked object, since the SurfaceFlinger instance may
@@ -1102,8 +1124,6 @@
     sp<SurfaceFlinger> mFlinger;
     scheduler::mock::SchedulerCallback mSchedulerCallback;
     scheduler::mock::NoOpSchedulerCallback mNoOpSchedulerCallback;
-    scheduler::mock::VsyncTrackerCallback mVsyncTrackerCallback;
-    scheduler::mock::NoOpVsyncTrackerCallback mNoOpVsyncTrackerCallback;
     std::unique_ptr<frametimeline::impl::TokenManager> mTokenManager;
     scheduler::TestableScheduler* mScheduler = nullptr;
     Hwc2::mock::PowerAdvisor mPowerAdvisor;
diff --git a/services/surfaceflinger/tests/unittests/VSyncPredictorTest.cpp b/services/surfaceflinger/tests/unittests/VSyncPredictorTest.cpp
index d952b70..b9f3d70 100644
--- a/services/surfaceflinger/tests/unittests/VSyncPredictorTest.cpp
+++ b/services/surfaceflinger/tests/unittests/VSyncPredictorTest.cpp
@@ -26,7 +26,6 @@
 #include <common/test/FlagUtils.h>
 #include "Scheduler/VSyncPredictor.h"
 #include "mock/DisplayHardware/MockDisplayMode.h"
-#include "mock/MockVsyncTrackerCallback.h"
 
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>
@@ -82,14 +81,13 @@
     nsecs_t mNow = 0;
     nsecs_t mPeriod = 1000;
     ftl::NonNull<DisplayModePtr> mMode = displayMode(mPeriod);
-    scheduler::mock::VsyncTrackerCallback mVsyncTrackerCallback;
     static constexpr size_t kHistorySize = 10;
     static constexpr size_t kMinimumSamplesForPrediction = 6;
     static constexpr size_t kOutlierTolerancePercent = 25;
     static constexpr nsecs_t mMaxRoundingError = 100;
 
     VSyncPredictor tracker{mMode, kHistorySize, kMinimumSamplesForPrediction,
-                           kOutlierTolerancePercent, mVsyncTrackerCallback};
+                           kOutlierTolerancePercent};
 };
 
 TEST_F(VSyncPredictorTest, reportsAnticipatedPeriod) {
@@ -410,8 +408,7 @@
 // See b/151146131
 TEST_F(VSyncPredictorTest, hasEnoughPrecision) {
     const auto mode = displayMode(mPeriod);
-    VSyncPredictor tracker{mode, 20, kMinimumSamplesForPrediction, kOutlierTolerancePercent,
-                           mVsyncTrackerCallback};
+    VSyncPredictor tracker{mode, 20, kMinimumSamplesForPrediction, kOutlierTolerancePercent};
     std::vector<nsecs_t> const simulatedVsyncs{840873348817, 840890049444, 840906762675,
                                                840923581635, 840940161584, 840956868096,
                                                840973702473, 840990256277, 841007116851,
@@ -658,48 +655,6 @@
     EXPECT_THAT(tracker.nextAnticipatedVSyncTimeFrom(mNow + 5100), Eq(mNow + 6 * mPeriod));
 }
 
-TEST_F(VSyncPredictorTest, vsyncTrackerCallback) {
-    SET_FLAG_FOR_TEST(flags::vrr_config, true);
-
-    const auto refreshRate = Fps::fromPeriodNsecs(mPeriod);
-    NotifyExpectedPresentConfig notifyExpectedPresentConfig;
-    notifyExpectedPresentConfig.timeoutNs = Period::fromNs(30).ns();
-
-    hal::VrrConfig vrrConfig;
-    vrrConfig.notifyExpectedPresentConfig = notifyExpectedPresentConfig;
-    vrrConfig.minFrameIntervalNs = refreshRate.getPeriodNsecs();
-
-    const int32_t kGroup = 0;
-    const auto kResolution = ui::Size(1920, 1080);
-    const auto mode =
-            ftl::as_non_null(createVrrDisplayMode(DisplayModeId(0), refreshRate, vrrConfig, kGroup,
-                                                  kResolution, DEFAULT_DISPLAY_ID));
-
-    tracker.setDisplayModePtr(mode);
-    auto last = mNow;
-    for (auto i = 0u; i < kMinimumSamplesForPrediction; i++) {
-        EXPECT_CALL(mVsyncTrackerCallback,
-                    onVsyncGenerated(TimePoint::fromNs(last + mPeriod), mode,
-                                     FpsMatcher(refreshRate)))
-                .Times(1);
-        EXPECT_THAT(tracker.nextAnticipatedVSyncTimeFrom(mNow), Eq(last + mPeriod));
-        mNow += mPeriod;
-        last = mNow;
-        tracker.addVsyncTimestamp(mNow);
-    }
-
-    tracker.setRenderRate(refreshRate / 2);
-    {
-        // out of render rate phase
-        EXPECT_CALL(mVsyncTrackerCallback,
-                    onVsyncGenerated(TimePoint::fromNs(mNow + 3 * mPeriod), mode,
-                                     FpsMatcher(refreshRate / 2)))
-                .Times(1);
-        EXPECT_THAT(tracker.nextAnticipatedVSyncTimeFrom(mNow + 1 * mPeriod),
-                    Eq(mNow + 3 * mPeriod));
-    }
-}
-
 TEST_F(VSyncPredictorTest, adjustsVrrTimeline) {
     SET_FLAG_FOR_TEST(flags::vrr_config, true);
 
@@ -716,7 +671,7 @@
                                      .build());
 
     VSyncPredictor vrrTracker{kMode, kHistorySize, kMinimumSamplesForPrediction,
-                              kOutlierTolerancePercent, mVsyncTrackerCallback};
+                              kOutlierTolerancePercent};
 
     vrrTracker.setRenderRate(minFrameRate);
     vrrTracker.addVsyncTimestamp(0);
@@ -733,28 +688,6 @@
     EXPECT_EQ(5000, vrrTracker.nextAnticipatedVSyncTimeFrom(4500, 4500));
     EXPECT_EQ(6000, vrrTracker.nextAnticipatedVSyncTimeFrom(5000, 5000));
 }
-
-TEST_F(VSyncPredictorTest, absentVrrConfigNoVsyncTrackerCallback) {
-    SET_FLAG_FOR_TEST(flags::vrr_config, true);
-    const auto refreshRate = Fps::fromPeriodNsecs(mPeriod);
-    const std::optional<hal::VrrConfig> vrrConfigOpt = std::nullopt;
-    constexpr int32_t kGroup = 0;
-    constexpr auto kResolution = ui::Size(1920, 1080);
-    const auto mode =
-            ftl::as_non_null(createVrrDisplayMode(DisplayModeId(0), refreshRate, vrrConfigOpt,
-                                                  kGroup, kResolution, DEFAULT_DISPLAY_ID));
-    tracker.setDisplayModePtr(mode);
-
-    auto last = mNow;
-    for (auto i = 0u; i < kMinimumSamplesForPrediction; i++) {
-        EXPECT_CALL(mVsyncTrackerCallback, onVsyncGenerated(_, _, _)).Times(0);
-        EXPECT_THAT(tracker.nextAnticipatedVSyncTimeFrom(mNow), Eq(last + mPeriod));
-        mNow += mPeriod;
-        last = mNow;
-        tracker.addVsyncTimestamp(mNow);
-    }
-}
-
 } // namespace android::scheduler
 
 // TODO(b/129481165): remove the #pragma below and fix conversion issues
diff --git a/services/surfaceflinger/tests/unittests/mock/MockSchedulerCallback.h b/services/surfaceflinger/tests/unittests/mock/MockSchedulerCallback.h
index 22b2ccc..4ca0542 100644
--- a/services/surfaceflinger/tests/unittests/mock/MockSchedulerCallback.h
+++ b/services/surfaceflinger/tests/unittests/mock/MockSchedulerCallback.h
@@ -28,6 +28,8 @@
     MOCK_METHOD(void, kernelTimerChanged, (bool), (override));
     MOCK_METHOD(void, triggerOnFrameRateOverridesChanged, (), (override));
     MOCK_METHOD(void, onChoreographerAttached, (), (override));
+    MOCK_METHOD(void, onExpectedPresentTimePosted, (TimePoint, ftl::NonNull<DisplayModePtr>, Fps),
+                (override));
 };
 
 struct NoOpSchedulerCallback final : ISchedulerCallback {
@@ -36,6 +38,7 @@
     void kernelTimerChanged(bool) override {}
     void triggerOnFrameRateOverridesChanged() override {}
     void onChoreographerAttached() override {}
+    void onExpectedPresentTimePosted(TimePoint, ftl::NonNull<DisplayModePtr>, Fps) override {}
 };
 
 } // namespace android::scheduler::mock
diff --git a/services/surfaceflinger/tests/unittests/mock/MockVsyncTrackerCallback.h b/services/surfaceflinger/tests/unittests/mock/MockVsyncTrackerCallback.h
deleted file mode 100644
index b48529f..0000000
--- a/services/surfaceflinger/tests/unittests/mock/MockVsyncTrackerCallback.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * Copyright 2023 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <gmock/gmock.h>
-
-#include "Scheduler/VSyncTracker.h"
-
-namespace android::scheduler::mock {
-
-struct VsyncTrackerCallback final : IVsyncTrackerCallback {
-    MOCK_METHOD(void, onVsyncGenerated, (TimePoint, ftl::NonNull<DisplayModePtr>, Fps), (override));
-};
-
-struct NoOpVsyncTrackerCallback final : IVsyncTrackerCallback {
-    void onVsyncGenerated(TimePoint, ftl::NonNull<DisplayModePtr>, Fps) override{};
-};
-} // namespace android::scheduler::mock