Update webgl conformance expectations for Mac/ATI

BUG=308328
NOTRY=true

Review URL: https://codereview.chromium.org/27712004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@229463 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 229463
Revert 229437 "Remove old FocusManager code from Aura."

> Remove old FocusManager code from Aura.
> 
> Needed to add a simple TestFocusClient that can be used by tests, which were still using the old FocusManager. This allows us to remove some obsolete methods from FocusClient/RootWindow/etc.
> 
> R=sky@chromium.org
> BUG=
> 
> Review URL: https://codereview.chromium.org/26116008

TBR=ben@chromium.org

Review URL: https://codereview.chromium.org/29693004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@229464 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 229464