Re-enable Eager Gesture Recognition on Aura

ui/aura/window_event_dispatcher.h

Index: ui/aura/window_event_dispatcher.h
diff --git a/ui/aura/window_event_dispatcher.h b/ui/aura/window_event_dispatcher.h
index a93c5d857a2cb19588f177b46f05d6f940267ca4..d46837bb34ddedf2e5d671d6d2684b301c83f39c 100644
--- a/ui/aura/window_event_dispatcher.h
+++ b/ui/aura/window_event_dispatcher.h
@@ -120,6 +120,10 @@ class AURA_EXPORT WindowEventDispatcher : public ui::EventProcessor,
   //             observer.
   void OnPostNotifiedWindowDestroying(Window* window);
 
+  // Called when a Window wants to process a touch event asynchronously. Returns
+  // false if the event should not be forwarded.
+  virtual bool OnForwardingAsyncTouchEvent(ui::TouchEvent* event);

[sadrul, 2014/10/23 15:56:34]

why virtual?

'Forwarding' here doesn't really make a lot of sense. Can we call this something
like 'CanProcessTouchEventAsync' instead?

[tdresser, 2014/10/27 15:52:32]

Done.
CanProcessTouchEventAsync makes it sound side-effect free, which it definitely
isn't.

How about 'OnProcessingTouchEventAsync'?

+
  private:
   FRIEND_TEST_ALL_PREFIXES(WindowEventDispatcherTest,
                            KeepTranslatedEventInRoot);