Fix ninebox rendering.
Fix ninebox rendering.

- Correct some wrong x/y coords.
- Get rid of FillWidget. We can't paint the widget with a debugging color because some of our images are partially translucent, so the debug color will shine through.

TEST=CustomContainerButton hover-over should now appear properly. Download items in the shelf should appear properly.

Review URL: http://codereview.chromium.org/56091

git-svn-id: http://src.chromium.org/svn/trunk/src@12898 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 8be9ebc8055f7bbc84d27d915ae3fecc98083112
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser