Merge "Remove mInstallLock from dexopt." into tm-dev am: f5393cec am: b295d082 am: 281d15d1

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17570178



Change-Id: I7fb069e7bd2183672a9bc79589fa85a875a9e492
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>