[automerger skipped] Merge "Avoid locking mChanges when not necessary" am: 6d66e48e am: 4f007c93 -s ours am: f5664a2c -s ours am: a1cefb9e -s ours

am skip reason: Merged-In I193c8f0ce2659b89469bb21e505a6da382b64703 with SHA-1 58865c71 is already in history

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1737094

Change-Id: Iff84c10f4577fd6605d77323507718f49fc70d52