diff --git a/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp b/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp
index e32cf88..fa31643 100644
--- a/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp
+++ b/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp
@@ -67,15 +67,13 @@
 
     EXPECT_CALL(*mEventThread, registerDisplayEventConnection(_));
     EXPECT_CALL(*mEventThread, createEventConnection(_, _))
-            .WillOnce(Return(sp<EventThreadConnection>::make(mEventThread,
-                                                             mock::EventThread::kCallingUid,
-                                                             ResyncCallback())));
+            .WillOnce(Return(
+                    sp<EventThreadConnection>::make(mEventThread, mock::EventThread::kCallingUid)));
 
     EXPECT_CALL(*mSFEventThread, registerDisplayEventConnection(_));
     EXPECT_CALL(*mSFEventThread, createEventConnection(_, _))
             .WillOnce(Return(sp<EventThreadConnection>::make(mSFEventThread,
-                                                             mock::EventThread::kCallingUid,
-                                                             ResyncCallback())));
+                                                             mock::EventThread::kCallingUid)));
 
     mFlinger.setupScheduler(std::make_unique<mock::VsyncController>(),
                             std::make_shared<mock::VSyncTracker>(),
diff --git a/services/surfaceflinger/tests/unittests/EventThreadTest.cpp b/services/surfaceflinger/tests/unittests/EventThreadTest.cpp
index 9b46009..8891c06 100644
--- a/services/surfaceflinger/tests/unittests/EventThreadTest.cpp
+++ b/services/surfaceflinger/tests/unittests/EventThreadTest.cpp
@@ -57,7 +57,7 @@
 
 } // namespace
 
-class EventThreadTest : public testing::Test {
+class EventThreadTest : public testing::Test, public IEventThreadCallback {
 protected:
     static constexpr std::chrono::nanoseconds kWorkDuration = 0ms;
     static constexpr std::chrono::nanoseconds kReadyDuration = 3ms;
@@ -65,10 +65,8 @@
     class MockEventThreadConnection : public EventThreadConnection {
     public:
         MockEventThreadConnection(impl::EventThread* eventThread, uid_t callingUid,
-                                  ResyncCallback&& resyncCallback,
                                   EventRegistrationFlags eventRegistration)
-              : EventThreadConnection(eventThread, callingUid, std::move(resyncCallback),
-                                      eventRegistration) {}
+              : EventThreadConnection(eventThread, callingUid, eventRegistration) {}
         MOCK_METHOD1(postEvent, status_t(const DisplayEventReceiver::Event& event));
     };
 
@@ -78,7 +76,14 @@
     EventThreadTest();
     ~EventThreadTest() override;
 
-    void setupEventThread(std::chrono::nanoseconds vsyncPeriod);
+    void SetUp() override { mVsyncPeriod = VSYNC_PERIOD; }
+
+    // IEventThreadCallback overrides
+    bool throttleVsync(TimePoint, uid_t) override;
+    Period getVsyncPeriod(uid_t) override;
+    void resync() override;
+
+    void setupEventThread();
     sp<MockEventThreadConnection> createConnection(ConnectionEventRecorder& recorder,
                                                    EventRegistrationFlags eventRegistration = {},
                                                    uid_t ownerUid = mConnectionUid);
@@ -92,8 +97,7 @@
     void expectVsyncEventReceivedByConnection(nsecs_t expectedTimestamp, unsigned expectedCount);
     void expectVsyncEventFrameTimelinesCorrect(
             nsecs_t expectedTimestamp, gui::VsyncEventData::FrameTimeline preferredVsyncData);
-    void expectVsyncEventDataFrameTimelinesValidLength(VsyncEventData vsyncEventData,
-                                                       std::chrono::nanoseconds vsyncPeriod);
+    void expectVsyncEventDataFrameTimelinesValidLength(VsyncEventData vsyncEventData);
     void expectHotplugEventReceivedByConnection(PhysicalDisplayId expectedDisplayId,
                                                 bool expectedConnected);
     void expectConfigChangedEventReceivedByConnection(PhysicalDisplayId expectedDisplayId,
@@ -133,6 +137,8 @@
     sp<MockEventThreadConnection> mThrottledConnection;
     std::unique_ptr<frametimeline::impl::TokenManager> mTokenManager;
 
+    std::chrono::nanoseconds mVsyncPeriod;
+
     static constexpr uid_t mConnectionUid = 443;
     static constexpr uid_t mThrottledConnectionUid = 177;
 };
@@ -168,17 +174,24 @@
     EXPECT_TRUE(mVSyncCallbackUnregisterRecorder.waitForCall().has_value());
 }
 
-void EventThreadTest::setupEventThread(std::chrono::nanoseconds vsyncPeriod) {
-    const auto throttleVsync = [&](nsecs_t expectedVsyncTimestamp, uid_t uid) {
-        mThrottleVsyncCallRecorder.getInvocable()(expectedVsyncTimestamp, uid);
-        return (uid == mThrottledConnectionUid);
-    };
-    const auto getVsyncPeriod = [vsyncPeriod](uid_t uid) { return vsyncPeriod.count(); };
+bool EventThreadTest::throttleVsync(android::TimePoint expectedVsyncTimestamp, uid_t uid) {
+    mThrottleVsyncCallRecorder.recordCall(expectedVsyncTimestamp.ns(), uid);
+    return (uid == mThrottledConnectionUid);
+}
 
+Period EventThreadTest::getVsyncPeriod(uid_t) {
+    return mVsyncPeriod;
+}
+
+void EventThreadTest::resync() {
+    mResyncCallRecorder.recordCall();
+}
+
+void EventThreadTest::setupEventThread() {
     mTokenManager = std::make_unique<frametimeline::impl::TokenManager>();
     mThread = std::make_unique<impl::EventThread>("EventThreadTest", mVsyncSchedule,
-                                                  mTokenManager.get(), throttleVsync,
-                                                  getVsyncPeriod, kWorkDuration, kReadyDuration);
+                                                  mTokenManager.get(), *this, kWorkDuration,
+                                                  kReadyDuration);
 
     // EventThread should register itself as VSyncSource callback.
     EXPECT_TRUE(mVSyncCallbackRegisterRecorder.waitForCall().has_value());
@@ -200,9 +213,7 @@
         ConnectionEventRecorder& recorder, EventRegistrationFlags eventRegistration,
         uid_t ownerUid) {
     sp<MockEventThreadConnection> connection =
-            sp<MockEventThreadConnection>::make(mThread.get(), ownerUid,
-                                                mResyncCallRecorder.getInvocable(),
-                                                eventRegistration);
+            sp<MockEventThreadConnection>::make(mThread.get(), ownerUid, eventRegistration);
     EXPECT_CALL(*connection, postEvent(_)).WillRepeatedly(Invoke(recorder.getInvocable()));
     return connection;
 }
@@ -292,10 +303,9 @@
     }
 }
 
-void EventThreadTest::expectVsyncEventDataFrameTimelinesValidLength(
-        VsyncEventData vsyncEventData, std::chrono::nanoseconds vsyncPeriod) {
+void EventThreadTest::expectVsyncEventDataFrameTimelinesValidLength(VsyncEventData vsyncEventData) {
     float nonPreferredTimelinesAmount =
-            scheduler::VsyncConfig::kEarlyLatchMaxThreshold / vsyncPeriod;
+            scheduler::VsyncConfig::kEarlyLatchMaxThreshold / mVsyncPeriod;
     EXPECT_LE(vsyncEventData.frameTimelinesLength, nonPreferredTimelinesAmount + 1)
             << "Amount of non-preferred frame timelines too many;"
             << " expected presentation time will be over threshold";
@@ -357,7 +367,7 @@
  */
 
 TEST_F(EventThreadTest, canCreateAndDestroyThreadWithNoEventsSent) {
-    setupEventThread(VSYNC_PERIOD);
+    setupEventThread();
 
     EXPECT_FALSE(mVSyncCallbackRegisterRecorder.waitForCall(0us).has_value());
     EXPECT_FALSE(mVSyncCallbackScheduleRecorder.waitForCall(0us).has_value());
@@ -368,7 +378,7 @@
 }
 
 TEST_F(EventThreadTest, vsyncRequestIsIgnoredIfDisplayIsDisconnected) {
-    setupEventThread(VSYNC_PERIOD);
+    setupEventThread();
 
     mThread->onHotplugReceived(INTERNAL_DISPLAY_ID, false);
     expectHotplugEventReceivedByConnection(INTERNAL_DISPLAY_ID, false);
@@ -381,7 +391,7 @@
 }
 
 TEST_F(EventThreadTest, requestNextVsyncPostsASingleVSyncEventToTheConnection) {
-    setupEventThread(VSYNC_PERIOD);
+    setupEventThread();
 
     // Signal that we want the next vsync event to be posted to the connection
     mThread->requestNextVsync(mConnection);
@@ -414,7 +424,7 @@
 }
 
 TEST_F(EventThreadTest, requestNextVsyncEventFrameTimelinesCorrect) {
-    setupEventThread(VSYNC_PERIOD);
+    setupEventThread();
 
     // Signal that we want the next vsync event to be posted to the connection
     mThread->requestNextVsync(mConnection);
@@ -428,12 +438,12 @@
 }
 
 TEST_F(EventThreadTest, requestNextVsyncEventFrameTimelinesValidLength) {
+    setupEventThread();
     // The VsyncEventData should not have kFrameTimelinesCapacity amount of valid frame timelines,
     // due to longer vsync period and kEarlyLatchMaxThreshold. Use length-2 to avoid decimal
     // truncation (e.g. 60Hz has 16.6... ms vsync period).
-    std::chrono::nanoseconds vsyncPeriod(scheduler::VsyncConfig::kEarlyLatchMaxThreshold /
-                                         (VsyncEventData::kFrameTimelinesCapacity - 2));
-    setupEventThread(vsyncPeriod);
+    mVsyncPeriod = (scheduler::VsyncConfig::kEarlyLatchMaxThreshold /
+                    (VsyncEventData::kFrameTimelinesCapacity - 2));
 
     // Signal that we want the next vsync event to be posted to the connection
     mThread->requestNextVsync(mConnection);
@@ -449,11 +459,11 @@
     ASSERT_TRUE(args.has_value()) << " did not receive an event for timestamp "
                                   << expectedTimestamp;
     const VsyncEventData vsyncEventData = std::get<0>(args.value()).vsync.vsyncData;
-    expectVsyncEventDataFrameTimelinesValidLength(vsyncEventData, vsyncPeriod);
+    expectVsyncEventDataFrameTimelinesValidLength(vsyncEventData);
 }
 
 TEST_F(EventThreadTest, getLatestVsyncEventData) {
-    setupEventThread(VSYNC_PERIOD);
+    setupEventThread();
 
     const nsecs_t now = systemTime();
     const nsecs_t preferredExpectedPresentationTime = now + 20000000;
@@ -469,7 +479,7 @@
     // Check EventThread immediately requested a resync.
     EXPECT_TRUE(mResyncCallRecorder.waitForCall().has_value());
 
-    expectVsyncEventDataFrameTimelinesValidLength(vsyncEventData, VSYNC_PERIOD);
+    expectVsyncEventDataFrameTimelinesValidLength(vsyncEventData);
     EXPECT_GT(vsyncEventData.frameTimelines[0].deadlineTimestamp, now)
             << "Deadline timestamp should be greater than frame time";
     for (size_t i = 0; i < vsyncEventData.frameTimelinesLength; i++) {
@@ -508,7 +518,7 @@
 }
 
 TEST_F(EventThreadTest, setVsyncRateZeroPostsNoVSyncEventsToThatConnection) {
-    setupEventThread(VSYNC_PERIOD);
+    setupEventThread();
 
     // Create a first connection, register it, and request a vsync rate of zero.
     ConnectionEventRecorder firstConnectionEventRecorder{0};
@@ -537,7 +547,7 @@
 }
 
 TEST_F(EventThreadTest, setVsyncRateOnePostsAllEventsToThatConnection) {
-    setupEventThread(VSYNC_PERIOD);
+    setupEventThread();
 
     mThread->setVsyncRate(1, mConnection);
 
@@ -562,7 +572,7 @@
 }
 
 TEST_F(EventThreadTest, setVsyncRateTwoPostsEveryOtherEventToThatConnection) {
-    setupEventThread(VSYNC_PERIOD);
+    setupEventThread();
 
     mThread->setVsyncRate(2, mConnection);
 
@@ -590,7 +600,7 @@
 }
 
 TEST_F(EventThreadTest, connectionsRemovedIfInstanceDestroyed) {
-    setupEventThread(VSYNC_PERIOD);
+    setupEventThread();
 
     mThread->setVsyncRate(1, mConnection);
 
@@ -609,7 +619,7 @@
 }
 
 TEST_F(EventThreadTest, connectionsRemovedIfEventDeliveryError) {
-    setupEventThread(VSYNC_PERIOD);
+    setupEventThread();
 
     ConnectionEventRecorder errorConnectionEventRecorder{NO_MEMORY};
     sp<MockEventThreadConnection> errorConnection = createConnection(errorConnectionEventRecorder);
@@ -635,7 +645,7 @@
 }
 
 TEST_F(EventThreadTest, eventsDroppedIfNonfatalEventDeliveryError) {
-    setupEventThread(VSYNC_PERIOD);
+    setupEventThread();
 
     ConnectionEventRecorder errorConnectionEventRecorder{WOULD_BLOCK};
     sp<MockEventThreadConnection> errorConnection = createConnection(errorConnectionEventRecorder);
@@ -661,42 +671,42 @@
 }
 
 TEST_F(EventThreadTest, setPhaseOffsetForwardsToVSyncSource) {
-    setupEventThread(VSYNC_PERIOD);
+    setupEventThread();
 
     mThread->setDuration(321ns, 456ns);
     expectVSyncSetDurationCallReceived(321ns, 456ns);
 }
 
 TEST_F(EventThreadTest, postHotplugInternalDisconnect) {
-    setupEventThread(VSYNC_PERIOD);
+    setupEventThread();
 
     mThread->onHotplugReceived(INTERNAL_DISPLAY_ID, false);
     expectHotplugEventReceivedByConnection(INTERNAL_DISPLAY_ID, false);
 }
 
 TEST_F(EventThreadTest, postHotplugInternalConnect) {
-    setupEventThread(VSYNC_PERIOD);
+    setupEventThread();
 
     mThread->onHotplugReceived(INTERNAL_DISPLAY_ID, true);
     expectHotplugEventReceivedByConnection(INTERNAL_DISPLAY_ID, true);
 }
 
 TEST_F(EventThreadTest, postHotplugExternalDisconnect) {
-    setupEventThread(VSYNC_PERIOD);
+    setupEventThread();
 
     mThread->onHotplugReceived(EXTERNAL_DISPLAY_ID, false);
     expectHotplugEventReceivedByConnection(EXTERNAL_DISPLAY_ID, false);
 }
 
 TEST_F(EventThreadTest, postHotplugExternalConnect) {
-    setupEventThread(VSYNC_PERIOD);
+    setupEventThread();
 
     mThread->onHotplugReceived(EXTERNAL_DISPLAY_ID, true);
     expectHotplugEventReceivedByConnection(EXTERNAL_DISPLAY_ID, true);
 }
 
 TEST_F(EventThreadTest, postConfigChangedPrimary) {
-    setupEventThread(VSYNC_PERIOD);
+    setupEventThread();
 
     const auto mode = DisplayMode::Builder(hal::HWConfigId(0))
                               .setPhysicalDisplayId(INTERNAL_DISPLAY_ID)
@@ -710,7 +720,7 @@
 }
 
 TEST_F(EventThreadTest, postConfigChangedExternal) {
-    setupEventThread(VSYNC_PERIOD);
+    setupEventThread();
 
     const auto mode = DisplayMode::Builder(hal::HWConfigId(0))
                               .setPhysicalDisplayId(EXTERNAL_DISPLAY_ID)
@@ -724,7 +734,7 @@
 }
 
 TEST_F(EventThreadTest, postConfigChangedPrimary64bit) {
-    setupEventThread(VSYNC_PERIOD);
+    setupEventThread();
 
     const auto mode = DisplayMode::Builder(hal::HWConfigId(0))
                               .setPhysicalDisplayId(DISPLAY_ID_64BIT)
@@ -737,7 +747,7 @@
 }
 
 TEST_F(EventThreadTest, suppressConfigChanged) {
-    setupEventThread(VSYNC_PERIOD);
+    setupEventThread();
 
     ConnectionEventRecorder suppressConnectionEventRecorder{0};
     sp<MockEventThreadConnection> suppressConnection =
@@ -758,7 +768,7 @@
 }
 
 TEST_F(EventThreadTest, postUidFrameRateMapping) {
-    setupEventThread(VSYNC_PERIOD);
+    setupEventThread();
 
     const std::vector<FrameRateOverride> overrides = {
             {.uid = 1, .frameRateHz = 20},
@@ -771,7 +781,7 @@
 }
 
 TEST_F(EventThreadTest, suppressUidFrameRateMapping) {
-    setupEventThread(VSYNC_PERIOD);
+    setupEventThread();
 
     const std::vector<FrameRateOverride> overrides = {
             {.uid = 1, .frameRateHz = 20},
@@ -791,7 +801,7 @@
 }
 
 TEST_F(EventThreadTest, requestNextVsyncWithThrottleVsyncDoesntPostVSync) {
-    setupEventThread(VSYNC_PERIOD);
+    setupEventThread();
 
     // Signal that we want the next vsync event to be posted to the throttled connection
     mThread->requestNextVsync(mThrottledConnection);
diff --git a/services/surfaceflinger/tests/unittests/SchedulerTest.cpp b/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
index 3200003..173f941 100644
--- a/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
+++ b/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
@@ -55,8 +55,7 @@
     class MockEventThreadConnection : public android::EventThreadConnection {
     public:
         explicit MockEventThreadConnection(EventThread* eventThread)
-              : EventThreadConnection(eventThread, /*callingUid*/ static_cast<uid_t>(0),
-                                      ResyncCallback()) {}
+              : EventThreadConnection(eventThread, /*callingUid*/ static_cast<uid_t>(0)) {}
         ~MockEventThreadConnection() = default;
 
         MOCK_METHOD1(stealReceiveChannel, binder::Status(gui::BitTube* outChannel));
diff --git a/services/surfaceflinger/tests/unittests/SurfaceFlinger_DisplayModeSwitching.cpp b/services/surfaceflinger/tests/unittests/SurfaceFlinger_DisplayModeSwitching.cpp
index 3a5fdf9..aeac80d 100644
--- a/services/surfaceflinger/tests/unittests/SurfaceFlinger_DisplayModeSwitching.cpp
+++ b/services/surfaceflinger/tests/unittests/SurfaceFlinger_DisplayModeSwitching.cpp
@@ -124,14 +124,12 @@
     EXPECT_CALL(*eventThread, registerDisplayEventConnection(_));
     EXPECT_CALL(*eventThread, createEventConnection(_, _))
             .WillOnce(Return(sp<EventThreadConnection>::make(eventThread.get(),
-                                                             mock::EventThread::kCallingUid,
-                                                             ResyncCallback())));
+                                                             mock::EventThread::kCallingUid)));
 
     EXPECT_CALL(*sfEventThread, registerDisplayEventConnection(_));
     EXPECT_CALL(*sfEventThread, createEventConnection(_, _))
             .WillOnce(Return(sp<EventThreadConnection>::make(sfEventThread.get(),
-                                                             mock::EventThread::kCallingUid,
-                                                             ResyncCallback())));
+                                                             mock::EventThread::kCallingUid)));
 
     auto vsyncController = std::make_unique<mock::VsyncController>();
     auto vsyncTracker = std::make_shared<mock::VSyncTracker>();
diff --git a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
index 908c9ab..dd998ba 100644
--- a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
+++ b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
@@ -281,14 +281,12 @@
         EXPECT_CALL(*eventThread, registerDisplayEventConnection(_));
         EXPECT_CALL(*eventThread, createEventConnection(_, _))
                 .WillOnce(Return(sp<EventThreadConnection>::make(eventThread.get(),
-                                                                 mock::EventThread::kCallingUid,
-                                                                 ResyncCallback())));
+                                                                 mock::EventThread::kCallingUid)));
 
         EXPECT_CALL(*sfEventThread, registerDisplayEventConnection(_));
         EXPECT_CALL(*sfEventThread, createEventConnection(_, _))
                 .WillOnce(Return(sp<EventThreadConnection>::make(sfEventThread.get(),
-                                                                 mock::EventThread::kCallingUid,
-                                                                 ResyncCallback())));
+                                                                 mock::EventThread::kCallingUid)));
 
         auto vsyncController = makeMock<mock::VsyncController>(options.useNiceMock);
         auto vsyncTracker = makeSharedMock<mock::VSyncTracker>(options.useNiceMock);
diff --git a/services/surfaceflinger/tests/unittests/mock/MockEventThread.h b/services/surfaceflinger/tests/unittests/mock/MockEventThread.h
index 8e782eb..866af3b 100644
--- a/services/surfaceflinger/tests/unittests/mock/MockEventThread.h
+++ b/services/surfaceflinger/tests/unittests/mock/MockEventThread.h
@@ -29,8 +29,16 @@
     EventThread();
     ~EventThread() override;
 
-    MOCK_METHOD(sp<EventThreadConnection>, createEventConnection,
-                (ResyncCallback, EventRegistrationFlags), (const, override));
+    // TODO(b/302035909): workaround otherwise gtest complains about
+    //  error: no viable conversion from
+    //  'tuple<android::ftl::Flags<android::gui::ISurfaceComposer::EventRegistration> &&>' to 'const
+    //  tuple<android::ftl::Flags<android::gui::ISurfaceComposer::EventRegistration>>'
+    sp<EventThreadConnection> createEventConnection(EventRegistrationFlags flags) const override {
+        return createEventConnection(false, flags);
+    }
+    MOCK_METHOD(sp<EventThreadConnection>, createEventConnection, (bool, EventRegistrationFlags),
+                (const));
+
     MOCK_METHOD(void, enableSyntheticVsync, (bool), (override));
     MOCK_METHOD(void, onHotplugReceived, (PhysicalDisplayId, bool), (override));
     MOCK_METHOD(void, onHotplugConnectionError, (int32_t), (override));