Merge "Give WebViewZygote process shared app GID." into main am: a5e07fc5fd

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3288748

Change-Id: I10d43d131906768ed20790d9b05740e50e576f9f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>