Merge "GraphicsTracker: do not call cancelBuffer() after being stopped" into...

Merge "GraphicsTracker: do not call cancelBuffer() after being stopped" into main am: b1252561 am: 7682f4e7

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/3184059



Change-Id: I008ff4cf9b4fce7d4f43bb912b83885067826add
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>