diff --git a/services/surfaceflinger/FpsReporter.cpp b/services/surfaceflinger/FpsReporter.cpp
index 155cf4d..a47348f 100644
--- a/services/surfaceflinger/FpsReporter.cpp
+++ b/services/surfaceflinger/FpsReporter.cpp
@@ -26,13 +26,12 @@
 
 namespace android {
 
-FpsReporter::FpsReporter(frametimeline::FrameTimeline& frameTimeline, SurfaceFlinger& flinger,
-                         std::unique_ptr<Clock> clock)
-      : mFrameTimeline(frameTimeline), mFlinger(flinger), mClock(std::move(clock)) {
+FpsReporter::FpsReporter(frametimeline::FrameTimeline& frameTimeline, std::unique_ptr<Clock> clock)
+      : mFrameTimeline(frameTimeline), mClock(std::move(clock)) {
     LOG_ALWAYS_FATAL_IF(mClock == nullptr, "Passed in null clock when constructing FpsReporter!");
 }
 
-void FpsReporter::dispatchLayerFps() {
+void FpsReporter::dispatchLayerFps(const frontend::LayerHierarchy& layerHierarchy) {
     const auto now = mClock->now();
     if (now - mLastDispatch < kMinDispatchDuration) {
         return;
@@ -52,31 +51,42 @@
     }
 
     std::unordered_set<int32_t> seenTasks;
-    std::vector<std::pair<TrackedListener, sp<Layer>>> listenersAndLayersToReport;
+    std::vector<std::pair<TrackedListener, const frontend::LayerHierarchy*>>
+            listenersAndLayersToReport;
 
-    mFlinger.mCurrentState.traverse([&](Layer* layer) {
-        auto& currentState = layer->getDrawingState();
-        if (currentState.metadata.has(gui::METADATA_TASK_ID)) {
-            int32_t taskId = currentState.metadata.getInt32(gui::METADATA_TASK_ID, 0);
+    layerHierarchy.traverse([&](const frontend::LayerHierarchy& hierarchy,
+                                const frontend::LayerHierarchy::TraversalPath& traversalPath) {
+        if (traversalPath.variant == frontend::LayerHierarchy::Variant::Detached) {
+            return false;
+        }
+        const auto& metadata = hierarchy.getLayer()->metadata;
+        if (metadata.has(gui::METADATA_TASK_ID)) {
+            int32_t taskId = metadata.getInt32(gui::METADATA_TASK_ID, 0);
             if (seenTasks.count(taskId) == 0) {
                 // localListeners is expected to be tiny
                 for (TrackedListener& listener : localListeners) {
                     if (listener.taskId == taskId) {
                         seenTasks.insert(taskId);
-                        listenersAndLayersToReport.push_back(
-                                {listener, sp<Layer>::fromExisting(layer)});
+                        listenersAndLayersToReport.push_back({listener, &hierarchy});
                         break;
                     }
                 }
             }
         }
+        return true;
     });
 
-    for (const auto& [listener, layer] : listenersAndLayersToReport) {
+    for (const auto& [listener, hierarchy] : listenersAndLayersToReport) {
         std::unordered_set<int32_t> layerIds;
 
-        layer->traverse(LayerVector::StateSet::Current,
-                        [&](Layer* layer) { layerIds.insert(layer->getSequence()); });
+        hierarchy->traverse([&](const frontend::LayerHierarchy& hierarchy,
+                                const frontend::LayerHierarchy::TraversalPath& traversalPath) {
+            if (traversalPath.variant == frontend::LayerHierarchy::Variant::Detached) {
+                return false;
+            }
+            layerIds.insert(static_cast<int32_t>(hierarchy.getLayer()->id));
+            return true;
+        });
 
         listener.listener->onFpsReported(mFrameTimeline.computeFps(layerIds));
     }
diff --git a/services/surfaceflinger/FpsReporter.h b/services/surfaceflinger/FpsReporter.h
index 438b1aa..01f1e07 100644
--- a/services/surfaceflinger/FpsReporter.h
+++ b/services/surfaceflinger/FpsReporter.h
@@ -24,6 +24,7 @@
 
 #include "Clock.h"
 #include "FrameTimeline/FrameTimeline.h"
+#include "FrontEnd/LayerHierarchy.h"
 #include "WpHash.h"
 
 namespace android {
@@ -33,13 +34,13 @@
 
 class FpsReporter : public IBinder::DeathRecipient {
 public:
-    FpsReporter(frametimeline::FrameTimeline& frameTimeline, SurfaceFlinger& flinger,
+    FpsReporter(frametimeline::FrameTimeline& frameTimeline,
                 std::unique_ptr<Clock> clock = std::make_unique<SteadyClock>());
 
     // Dispatches updated layer fps values for the registered listeners
     // This method promotes Layer weak pointers and performs layer stack traversals, so mStateLock
     // must be held when calling this method.
-    void dispatchLayerFps() EXCLUDES(mMutex);
+    void dispatchLayerFps(const frontend::LayerHierarchy&) EXCLUDES(mMutex);
 
     // Override for IBinder::DeathRecipient
     void binderDied(const wp<IBinder>&) override;
@@ -58,7 +59,6 @@
     };
 
     frametimeline::FrameTimeline& mFrameTimeline;
-    SurfaceFlinger& mFlinger;
     static const constexpr std::chrono::steady_clock::duration kMinDispatchDuration =
             std::chrono::milliseconds(500);
     std::unique_ptr<Clock> mClock;
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index c3bfb58..be0dd55 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -3096,7 +3096,7 @@
     {
         Mutex::Autolock lock(mStateLock);
         if (mFpsReporter) {
-            mFpsReporter->dispatchLayerFps();
+            mFpsReporter->dispatchLayerFps(mLayerHierarchyBuilder.getHierarchy());
         }
 
         if (mTunnelModeEnabledReporter) {
@@ -4240,7 +4240,7 @@
     mRegionSamplingThread =
             sp<RegionSamplingThread>::make(*this,
                                            RegionSamplingThread::EnvironmentTimingTunables());
-    mFpsReporter = sp<FpsReporter>::make(*mFrameTimeline, *this);
+    mFpsReporter = sp<FpsReporter>::make(*mFrameTimeline);
 }
 
 void SurfaceFlinger::doCommitTransactions() {
diff --git a/services/surfaceflinger/tests/unittests/FpsReporterTest.cpp b/services/surfaceflinger/tests/unittests/FpsReporterTest.cpp
index f695b09..9e8e306 100644
--- a/services/surfaceflinger/tests/unittests/FpsReporterTest.cpp
+++ b/services/surfaceflinger/tests/unittests/FpsReporterTest.cpp
@@ -24,7 +24,11 @@
 #include <gtest/gtest.h>
 #include <gui/LayerMetadata.h>
 
+#include "Client.h" // temporarily needed for LayerCreationArgs
 #include "FpsReporter.h"
+#include "FrontEnd/LayerCreationArgs.h"
+#include "FrontEnd/LayerHierarchy.h"
+#include "FrontEnd/LayerLifecycleManager.h"
 #include "Layer.h"
 #include "TestableSurfaceFlinger.h"
 #include "fake/FakeClock.h"
@@ -76,7 +80,15 @@
 
     sp<Layer> createBufferStateLayer(LayerMetadata metadata);
 
-    TestableSurfaceFlinger mFlinger;
+    LayerCreationArgs createArgs(uint32_t id, bool canBeRoot, uint32_t parentId,
+                                 LayerMetadata metadata);
+
+    void createRootLayer(uint32_t id, LayerMetadata metadata);
+
+    void createLayer(uint32_t id, uint32_t parentId, LayerMetadata metadata);
+
+    frontend::LayerLifecycleManager mLifecycleManager;
+
     mock::FrameTimeline mFrameTimeline =
             mock::FrameTimeline(std::make_shared<impl::TimeStats>(), 0);
 
@@ -89,8 +101,8 @@
 
     sp<TestableFpsListener> mFpsListener;
     fake::FakeClock* mClock = new fake::FakeClock();
-    sp<FpsReporter> mFpsReporter = sp<FpsReporter>::make(mFrameTimeline, *(mFlinger.flinger()),
-                                                         std::unique_ptr<Clock>(mClock));
+    sp<FpsReporter> mFpsReporter =
+            sp<FpsReporter>::make(mFrameTimeline, std::unique_ptr<Clock>(mClock));
 };
 
 FpsReporterTest::FpsReporterTest() {
@@ -98,9 +110,6 @@
             ::testing::UnitTest::GetInstance()->current_test_info();
     ALOGD("**** Setting up for %s.%s\n", test_info->test_case_name(), test_info->name());
 
-    mFlinger.setupMockScheduler();
-    mFlinger.setupComposer(std::make_unique<Hwc2::mock::Composer>());
-
     mFpsListener = sp<TestableFpsListener>::make();
 }
 
@@ -110,76 +119,94 @@
     ALOGD("**** Tearing down after %s.%s\n", test_info->test_case_name(), test_info->name());
 }
 
-sp<Layer> FpsReporterTest::createBufferStateLayer(LayerMetadata metadata = {}) {
+LayerCreationArgs FpsReporterTest::createArgs(uint32_t id, bool canBeRoot, uint32_t parentId,
+                                              LayerMetadata metadata) {
     sp<Client> client;
-    LayerCreationArgs args(mFlinger.flinger(), client, "buffer-state-layer", LAYER_FLAGS, metadata);
-    return sp<Layer>::make(args);
+    LayerCreationArgs args(std::make_optional(id));
+    args.name = "testlayer";
+    args.addToRoot = canBeRoot;
+    args.flags = LAYER_FLAGS;
+    args.metadata = metadata;
+    args.parentId = parentId;
+    return args;
+}
+
+void FpsReporterTest::createRootLayer(uint32_t id, LayerMetadata metadata = LayerMetadata()) {
+    std::vector<std::unique_ptr<frontend::RequestedLayerState>> layers;
+    layers.emplace_back(std::make_unique<frontend::RequestedLayerState>(
+            createArgs(/*id=*/id, /*canBeRoot=*/true, /*parent=*/UNASSIGNED_LAYER_ID,
+                       /*metadata=*/metadata)));
+    mLifecycleManager.addLayers(std::move(layers));
+}
+
+void FpsReporterTest::createLayer(uint32_t id, uint32_t parentId,
+                                  LayerMetadata metadata = LayerMetadata()) {
+    std::vector<std::unique_ptr<frontend::RequestedLayerState>> layers;
+    layers.emplace_back(std::make_unique<frontend::RequestedLayerState>(
+            createArgs(/*id=*/id, /*canBeRoot=*/false, /*parent=*/parentId,
+                       /*mirror=*/metadata)));
+    mLifecycleManager.addLayers(std::move(layers));
 }
 
 namespace {
 
 TEST_F(FpsReporterTest, callsListeners) {
-    mParent = createBufferStateLayer();
     constexpr int32_t kTaskId = 12;
     LayerMetadata targetMetadata;
     targetMetadata.setInt32(gui::METADATA_TASK_ID, kTaskId);
-    mTarget = createBufferStateLayer(targetMetadata);
-    mChild = createBufferStateLayer();
-    mGrandChild = createBufferStateLayer();
-    mUnrelated = createBufferStateLayer();
-    mParent->addChild(mTarget);
-    mTarget->addChild(mChild);
-    mChild->addChild(mGrandChild);
-    mParent->commitChildList();
-    mFlinger.mutableCurrentState().layersSortedByZ.add(mParent);
-    mFlinger.mutableCurrentState().layersSortedByZ.add(mTarget);
-    mFlinger.mutableCurrentState().layersSortedByZ.add(mChild);
-    mFlinger.mutableCurrentState().layersSortedByZ.add(mGrandChild);
+
+    createRootLayer(1, targetMetadata);
+    createLayer(11, 1);
+    createLayer(111, 11);
+
+    frontend::LayerHierarchyBuilder hierarchyBuilder;
+    hierarchyBuilder.update(mLifecycleManager);
 
     float expectedFps = 44.0;
 
-    EXPECT_CALL(mFrameTimeline,
-                computeFps(UnorderedElementsAre(mTarget->getSequence(), mChild->getSequence(),
-                                                mGrandChild->getSequence())))
+    EXPECT_CALL(mFrameTimeline, computeFps(UnorderedElementsAre(1, 11, 111)))
             .WillOnce(Return(expectedFps));
 
     mFpsReporter->addListener(mFpsListener, kTaskId);
     mClock->advanceTime(600ms);
-    mFpsReporter->dispatchLayerFps();
+    mFpsReporter->dispatchLayerFps(hierarchyBuilder.getHierarchy());
     EXPECT_EQ(expectedFps, mFpsListener->lastReportedFps);
     mFpsReporter->removeListener(mFpsListener);
     Mock::VerifyAndClearExpectations(&mFrameTimeline);
 
     EXPECT_CALL(mFrameTimeline, computeFps(_)).Times(0);
-    mFpsReporter->dispatchLayerFps();
+    mFpsReporter->dispatchLayerFps(hierarchyBuilder.getHierarchy());
 }
 
 TEST_F(FpsReporterTest, rateLimits) {
     const constexpr int32_t kTaskId = 12;
     LayerMetadata targetMetadata;
     targetMetadata.setInt32(gui::METADATA_TASK_ID, kTaskId);
-    mTarget = createBufferStateLayer(targetMetadata);
-    mFlinger.mutableCurrentState().layersSortedByZ.add(mTarget);
+    createRootLayer(1);
+    createLayer(11, 1, targetMetadata);
+
+    frontend::LayerHierarchyBuilder hierarchyBuilder;
+    hierarchyBuilder.update(mLifecycleManager);
 
     float firstFps = 44.0;
     float secondFps = 53.0;
 
-    EXPECT_CALL(mFrameTimeline, computeFps(UnorderedElementsAre(mTarget->getSequence())))
+    EXPECT_CALL(mFrameTimeline, computeFps(UnorderedElementsAre(11)))
             .WillOnce(Return(firstFps))
             .WillOnce(Return(secondFps));
 
     mFpsReporter->addListener(mFpsListener, kTaskId);
     mClock->advanceTime(600ms);
-    mFpsReporter->dispatchLayerFps();
+    mFpsReporter->dispatchLayerFps(hierarchyBuilder.getHierarchy());
     EXPECT_EQ(firstFps, mFpsListener->lastReportedFps);
     mClock->advanceTime(200ms);
-    mFpsReporter->dispatchLayerFps();
+    mFpsReporter->dispatchLayerFps(hierarchyBuilder.getHierarchy());
     EXPECT_EQ(firstFps, mFpsListener->lastReportedFps);
     mClock->advanceTime(200ms);
-    mFpsReporter->dispatchLayerFps();
+    mFpsReporter->dispatchLayerFps(hierarchyBuilder.getHierarchy());
     EXPECT_EQ(firstFps, mFpsListener->lastReportedFps);
     mClock->advanceTime(200ms);
-    mFpsReporter->dispatchLayerFps();
+    mFpsReporter->dispatchLayerFps(hierarchyBuilder.getHierarchy());
     EXPECT_EQ(secondFps, mFpsListener->lastReportedFps);
 }