Merge "Add postAndWait() trace for calculating frame drawing time" into tm-dev am: 5591cf0712

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17184229

Change-Id: If133d592bcebd679134f8601bfe43eac6689ca79

libs/hwui/renderthread/DrawFrameTask.cpp

@@ -133,6 +133,7 @@ int DrawFrameTask::drawFrame() {
 }
 
 void DrawFrameTask::postAndWait() {
+    ATRACE_CALL();
     AutoMutex _lock(mLock);
     mRenderThread->queue().post([this]() { run(); });
     mSignal.wait(mLock);