Aura: Allow browser UI thread waiting for compositor commits.

base/threading/thread_restrictions.h

Index: base/threading/thread_restrictions.h
diff --git a/base/threading/thread_restrictions.h b/base/threading/thread_restrictions.h
index acc1b2137179111983185cb39590e3a6984887d3..c75f052b2f75b6fe91145e9ad564caec33a2e3cd 100644
--- a/base/threading/thread_restrictions.h
+++ b/base/threading/thread_restrictions.h
@@ -29,6 +29,9 @@ namespace browser_sync {
 class NonFrontendDataTypeController;
 class UIModelWorker;
 }
+namespace cc {
+class CCCompletionEvent;
+}
 namespace chromeos {
 class AudioMixerAlsa;
 class BlockingMethodCaller;
@@ -178,6 +181,7 @@ class BASE_EXPORT ThreadRestrictions {
   friend class chrome_browser_net::Predictor;     // http://crbug.com/78451
   friend class
       content::BrowserGpuChannelHostFactory;      // http://crbug.com/125248
+  friend class cc::CCCompletionEvent;             // http://crbug.com/FIXME

[tfarina, 2012/10/11 00:13:22]

did you really mean crbug.com/FIXME?

   friend class content::GLHelper;                 // http://crbug.com/125415
   friend class dbus::Bus;                         // http://crbug.com/125222
   friend class disk_cache::BackendImpl;           // http://crbug.com/74623