GitLab

Let's let caca decide the bitmap size. Also scopify caca objects.

BUG=none
TEST=use_ozone=1 chromeos=1 caca build
NOTRY=true

Review URL: https://codereview.chromium.org/387993002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@282970 0039d316-1c4b-4281-b951-d872f2087c98