Merge "Do not flush when sending view tree appearing event." into tm-qpr-dev am: 3309b71b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22145760



Change-Id: I8b25e71dd7d2b21a96daacc5aea9a18361775691
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>