Support frame rendering metrics for tunnel mode am: f13b578a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/23286011



Change-Id: Ibcbf7d2dab8a58c07852cfb40c01128e86765878
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>