Add hooks for flushing input from BeginFrame dispatch on Aura

content/browser/renderer_host/input/input_router.h

Index: content/browser/renderer_host/input/input_router.h
diff --git a/content/browser/renderer_host/input/input_router.h b/content/browser/renderer_host/input/input_router.h
index 186022feba8dac8adb4b544497ae3774ed696410..e84499dcf30aa1b896dd90d993063845f863a223 100644
--- a/content/browser/renderer_host/input/input_router.h
+++ b/content/browser/renderer_host/input/input_router.h
@@ -29,6 +29,11 @@ class InputRouter : public IPC::Listener {
   // success and false otherwise.
   virtual bool SendInput(scoped_ptr<IPC::Message> message) = 0;
 
+  // Called in response to a |SetNeedsFlushInput()| call made via the client.
+  // This is conditionally used for events that are best sent at a particular
+  // time, e.g., with scroll/wheel updates just before BeginFrame dispatch.
+  virtual void FlushInput(base::TimeTicks flush_time) = 0;
+
   // WebInputEvents
   virtual void SendMouseEvent(
       const MouseEventWithLatencyInfo& mouse_event) = 0;
@@ -48,11 +53,6 @@ class InputRouter : public IPC::Listener {
   // the site has a mobile-friendly viewport).
   virtual void NotifySiteIsMobileOptimized(bool is_mobile_optimized) = 0;
 
-  // Request a notification from the input router when all events have been
-  // fully dispatched and there are no longer any pending events.
-  // Note: This may trigger a synchronous notification if the router is empty.
-  virtual void RequestNotificationWhenFlushed() = 0;
-
   // Whether there are any events pending dispatch to or ack from the renderer.
   virtual bool HasPendingEvents() const = 0;
 };