Merge "Use canonical ABSL in WebRTC." into main am: fb5f4a3f63

Original change: https://android-review.googlesource.com/c/platform/external/webrtc/+/3294834

Change-Id: I0f6692ff9d1aa46d0c912f6c5ec173f920f0a2d0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>