Remove dead code from LayerFE

Flag: EXEMPT flag removal
Bug: 351894825
Test: presubmit
Change-Id: I11312e555afac83d11da0a90816abbf666e1766b

Author: nairvis-beep

services/surfaceflinger/CompositionEngine/include/compositionengine/LayerFE.h

@@ -148,9 +148,6 @@ class LayerFE : public virtual RefBase {
     virtual std::optional<LayerSettings> prepareClientComposition(
             ClientCompositionTargetSettings&) const = 0;
 
-    // Called after the layer is displayed to update the presentation fence
-    virtual void onLayerDisplayed(ftl::SharedFuture<FenceResult>, ui::LayerStack layerStack) = 0;
-
     // Initializes a promise for a buffer release fence and provides the future for that
     // fence. This should only be called when a promise has not yet been created, or
     // after the previous promise has already been fulfilled. Attempting to call this

services/surfaceflinger/CompositionEngine/include/compositionengine/mock/LayerFE.h

@@ -50,9 +50,6 @@ class LayerFE : public compositionengine::LayerFE {
                        std::optional<compositionengine::LayerFE::LayerSettings>(
                                compositionengine::LayerFE::ClientCompositionTargetSettings&));
 
-    MOCK_METHOD(void, onLayerDisplayed, (ftl::SharedFuture<FenceResult>, ui::LayerStack),
-                (override));
-
     MOCK_METHOD0(createReleaseFenceFuture, ftl::Future<FenceResult>());
     MOCK_METHOD1(setReleaseFence, void(const FenceResult&));
     MOCK_METHOD0(getReleaseFencePromiseStatus, LayerFE::ReleaseFencePromiseStatus());

services/surfaceflinger/LayerFE.cpp

@@ -27,7 +27,6 @@
 #include "LayerFE.h"
 #include "SurfaceFlinger.h"
 #include "ui/FenceResult.h"
-#include "ui/LayerStack.h"
 
 namespace android {
 
@@ -343,11 +342,6 @@ void LayerFE::prepareShadowClientComposition(LayerFE::LayerSettings& caster,
     caster.shadow = state;
 }
 
-void LayerFE::onLayerDisplayed(ftl::SharedFuture<FenceResult> futureFenceResult,
-                               ui::LayerStack layerStack) {
-    mCompositionResult.releaseFences.emplace_back(std::move(futureFenceResult), layerStack);
-}
-
 CompositionResult&& LayerFE::stealCompositionResult() {
     return std::move(mCompositionResult);
 }

services/surfaceflinger/LayerFE.h

@@ -22,14 +22,12 @@
 #include "compositionengine/LayerFE.h"
 #include "compositionengine/LayerFECompositionState.h"
 #include "renderengine/LayerSettings.h"
-#include "ui/LayerStack.h"
 
 #include <ftl/future.h>
 
 namespace android {
 
 struct CompositionResult {
-    std::vector<std::pair<ftl::SharedFuture<FenceResult>, ui::LayerStack>> releaseFences;
     sp<Fence> lastClientCompositionFence = nullptr;
 };
 
@@ -41,7 +39,6 @@ class LayerFE : public virtual RefBase, public virtual compositionengine::LayerF
     // compositionengine::LayerFE overrides
     const compositionengine::LayerFECompositionState* getCompositionState() const override;
     bool onPreComposition(bool updatingOutputGeometryThisFrame) override;
-    void onLayerDisplayed(ftl::SharedFuture<FenceResult>, ui::LayerStack) override;
     const char* getDebugName() const override;
     int32_t getSequence() const override;
     bool hasRoundedCorners() const override;