Merge "WebmFrameThread: Don't set mDone in WebmFrameSinkThread::stop" am: ae14fcc603 am: 5a16ca2a8b

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/2439314

Change-Id: I20586c3f897e4575a19f3c7e23525099881af64d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>