Revert^2 "Second Patch for async RenderEngine"

Keep the change of Second Patch for async RenderEngine and fix the
regression

- remove the vector variables which is to store futureFence locally in
BufferStateLayer to get avoid fd leaking
- screenshots initiated from the app don't wait on the SF main thread.

2109270e74a18585aceffc94d1758cee47bb4175

Bug: 202843200
Bug: 202833127
Bug: 202808760
Test: Wembley PIN setting test, NexusLauncherOutOfProcTests
Change-Id: I87847d01e2e330ddec88272cd8608f0b78c0a2cd
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index 07b2eb5..4569f9a 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -616,7 +616,8 @@
     void prepareCompositionState(compositionengine::LayerFE::StateSubset subset) override;
     std::vector<compositionengine::LayerFE::LayerSettings> prepareClientCompositionList(
             compositionengine::LayerFE::ClientCompositionTargetSettings&) override;
-    void onLayerDisplayed(const sp<Fence>& releaseFence) override;
+    void onLayerDisplayed(
+            std::shared_future<renderengine::RenderEngineResult> futureRenderEngineResult) override;
 
     void setWasClientComposed(const sp<Fence>& fence) override {
         mLastClientCompositionFence = fence;