Make the Choreographer thread-safe.
Make the Choreographer thread-safe.

Change-Id: Ieb52cf3b8086e7cf743b45a8b92d4bd5957f43ee

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base