GitLab

- Cleanup TabRendererGtk::PaintIcon so select which surface we should paint and
  instead of copy/pasting the same code in each block.
- When calling any version of GtkThemeService::GetCached*, don't first get the
  pixbuf (which can lock) and then check if you have a cairo cached version of
  the pixbuf, discarding the result of locking every time except the first.

BUG=100803
TEST=none


Review URL: http://codereview.chromium.org/8341089

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@107817 0039d316-1c4b-4281-b951-d872f2087c98