Early terminate flings when scrolling impossible

content/renderer/input/input_event_filter.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_RENDERER_INPUT_INPUT_EVENT_FILTER_H_
 #define CONTENT_RENDERER_INPUT_INPUT_EVENT_FILTER_H_
 
 #include <queue>
 #include <set>
 
@@ skipping 30 matching lines @@
   // |main_listener| on the main thread.  (The "main thread" in this context is
   // the thread where the InputEventFilter was constructed.)  The responsibility
   // is left to the eventual handler to deliver the corresponding
   // InputHostMsg_HandleInputEvent_ACK.
   //
   virtual void SetBoundHandler(const Handler& handler) OVERRIDE;
   virtual void DidAddInputHandler(int routing_id,
                                   cc::InputHandler* input_handler) OVERRIDE;
   virtual void DidRemoveInputHandler(int routing_id) OVERRIDE;
   virtual void DidOverscroll(int routing_id,
-                             const cc::DidOverscrollParams& params) OVERRIDE;
+                             const DidOverscrollParams& params) OVERRIDE;
   virtual void DidStopFlinging(int routing_id) OVERRIDE;
 
   // IPC::ChannelProxy::MessageFilter methods:
   virtual void OnFilterAdded(IPC::Channel* channel) OVERRIDE;
   virtual void OnFilterRemoved() OVERRIDE;
   virtual void OnChannelClosing() OVERRIDE;
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
  private:
   friend class IPC::ChannelProxy::MessageFilter;
@@ skipping 25 matching lines @@
   // Indicates the routing_ids for which input events should be filtered.
   std::set<int> routes_;
 
   // Specifies whether overscroll notifications are forwarded to the host.
   bool overscroll_notifications_enabled_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_INPUT_INPUT_EVENT_FILTER_H_