automerge: ac4dfec * commit 'ac4dfec8b3e15405fc0b0eba581169e7feef28ff': Doc change: refactor GCM docs to be platform-agnostic.
automerge: ac4dfec * commit 'ac4dfec8b3e15405fc0b0eba581169e7feef28ff': Doc change: refactor GCM docs to be platform-agnostic.