- Fix crashes/assertions when CefBrowserImpl is destroyed on a non-UI thread (issue #694).
- Improve the handling of invalidation/painting for off-screen rendering (issue #695).
git-svn-id: https://chromiumembedded.googlecode.com/svn/branches/1180@738 5089003a-bbd8-11dd-ad1f-f1f9622dbc98