Merge "GpuWork: Clarify documentation comment" into tm-dev am: c52185039b am: 970436833c

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/17664358

Change-Id: Ie99c04dfeab5ab4669cb2e0fc705e963c841b8f7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>