Drop accelerated surface when switching off accelerated compositor.

Otherwise when the accelerated compositor is next activated, a flash of the last accelerated composited page will appear.

BUG=116603

Review URL: http://codereview.chromium.org/9615042

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@125303 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed