Move IPC::MessageFilter and router to a separate file

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>
 
 #include "base/callback_forward.h"
 #include "base/synchronization/lock.h"
 #include "content/common/content_export.h"
 #include "content/port/common/input_event_ack_state.h"
 #include "content/renderer/input/input_handler_manager_client.h"
-#include "ipc/ipc_channel_proxy.h"
+#include "ipc/message_filter.h"
 #include "third_party/WebKit/public/web/WebInputEvent.h"
 
+namespace base {
+class MessageLoopProxy;
+}
+
+namespace IPC {
+class Listener;
+class Sender;
+}
+
 // This class can be used to intercept InputMsg_HandleInputEvent messages
 // and have them be delivered to a target thread.  Input events are filtered
 // based on routing_id (see AddRoute and RemoveRoute).
 //
 // The user of this class provides an instance of InputEventFilter::Handler,
 // which will be passed WebInputEvents on the target thread.
 //
 
 namespace content {
 
-class CONTENT_EXPORT InputEventFilter
-    : public InputHandlerManagerClient,
-      public IPC::ChannelProxy::MessageFilter {
+class CONTENT_EXPORT InputEventFilter : public InputHandlerManagerClient,
+                                        public IPC::MessageFilter {
  public:
   InputEventFilter(IPC::Listener* main_listener,
                    const scoped_refptr<base::MessageLoopProxy>& target_loop);
 
   // The |handler| is invoked on the thread associated with |target_loop| to
   // handle input events matching the filtered routes.
   //
   // If INPUT_EVENT_ACK_STATE_NOT_CONSUMED is returned by the handler,
   // the original InputMsg_HandleInputEvent message will be delivered to
   // |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 DidOverscrollParams& params) OVERRIDE;
   virtual void DidStopFlinging(int routing_id) OVERRIDE;
 
-  // IPC::ChannelProxy::MessageFilter methods:
+  // IPC::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;
   virtual ~InputEventFilter();
 
   void ForwardToMainListener(const IPC::Message& message);
   void ForwardToHandler(const IPC::Message& message);
   void SendACK(blink::WebInputEvent::Type type,
                InputEventAckState ack_result,
                const ui::LatencyInfo& latency_info,
                int routing_id);
   void SendMessage(const IPC::Message& message);
   void SendMessageOnIOThread(const IPC::Message& message);
@@ skipping 15 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_