Update to Chromium revision 61327.

- Enable accelerated 2D canvas and compositing.
- Add support for request.download_to_file behavior.

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@108 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

libcef/webwidget_host.h

@@ -41,6 +41,7 @@ class WebWidgetHost {
 
   void DidInvalidateRect(const gfx::Rect& rect);
   void DidScrollRect(int dx, int dy, const gfx::Rect& clip_rect);
+  void ScheduleComposite();
 #if defined(OS_WIN)
   void SetCursor(HCURSOR cursor);
 #endif