gfx: Create a separate gfx component out of ui.

Landed previously in r225857, which was reverted in r225859 because it broke android tests.

BUG=103304
R=ben@chromium.org

Review URL: https://codereview.chromium.org/25015003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@225909 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 225909