Add hooks for flushing input from BeginFrame dispatch on Aura

content/browser/renderer_host/input/input_router.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_INPUT_INPUT_ROUTER_H_
 #define CONTENT_BROWSER_RENDERER_HOST_INPUT_INPUT_ROUTER_H_
 
 #include "base/basictypes.h"
 #include "content/browser/renderer_host/event_with_latency_info.h"
 #include "content/common/input/input_event_ack_state.h"
@@ skipping 11 matching lines @@
 // received, it is free to customize when those events are dispatched.
 class InputRouter : public IPC::Listener {
  public:
   ~InputRouter() override {}
 
   // Send and take ownership of the the given InputMsg_*. This should be used
   // only for event types not associated with a WebInputEvent.  Returns true on
   // 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;
   virtual void SendWheelEvent(
       const MouseWheelEventWithLatencyInfo& wheel_event) = 0;
   virtual void SendKeyboardEvent(
       const NativeWebKeyboardEventWithLatencyInfo& key_event) = 0;
   virtual void SendGestureEvent(
       const GestureEventWithLatencyInfo& gesture_event) = 0;
   virtual void SendTouchEvent(
       const TouchEventWithLatencyInfo& touch_event) = 0;
 
   // Returns the oldest queued or in-flight keyboard event sent to the router.
   virtual const NativeWebKeyboardEvent* GetLastKeyboardEvent() const = 0;
 
   // Notify the router about whether the current page is mobile-optimized (i.e.,
   // 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;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_INPUT_INPUT_ROUTER_H_