Merge "Use canonical copy of ABSL for WebRTC dep." into main am: b6567484ba

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/3295012

Change-Id: I91074bc5d172696f2522420e385540085128f5f4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>