[Mac] Update composited IO surface context for non-core-animation case.

BUG=330618

Review URL: https://codereview.chromium.org/108443005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242726 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 242726