Decouple IPC::MessageFilter from IPC::Channel

content/renderer/input/input_event_filter.cc

 // 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.
 
 #include "content/renderer/input/input_event_filter.h"
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/location.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "cc/input/input_handler.h"
 #include "content/common/input/did_overscroll_params.h"
 #include "content/common/input/web_input_event_traits.h"
 #include "content/common/input_messages.h"
 #include "content/common/view_messages.h"
 #include "content/public/common/content_switches.h"
-#include "ipc/ipc_channel.h"
 #include "ipc/ipc_listener.h"
+#include "ipc/ipc_sender.h"
 #include "ui/gfx/vector2d_f.h"
 
 using blink::WebInputEvent;
 
 #include "ipc/ipc_message_null_macros.h"
 #undef IPC_MESSAGE_DECL
 #define IPC_MESSAGE_DECL(kind, type, name, in, out, ilist, olist) \
   case name::ID: return #name;
 
 const char* GetInputMessageTypeName(const IPC::Message& message) {
@@ skipping 51 matching lines @@
 
   SendMessage(scoped_ptr<IPC::Message>(
       new InputHostMsg_DidOverscroll(routing_id, params)));
 }
 
 void InputEventFilter::DidStopFlinging(int routing_id) {
   SendMessage(
       scoped_ptr<IPC::Message>(new ViewHostMsg_DidStopFlinging(routing_id)));
 }
 
-void InputEventFilter::OnFilterAdded(IPC::Channel* channel) {
+void InputEventFilter::OnFilterAdded(IPC::Sender* sender) {
   io_loop_ = base::MessageLoopProxy::current();
-  sender_ = channel;
+  sender_ = sender;
 }
 
 void InputEventFilter::OnFilterRemoved() {
   sender_ = NULL;
 }
 
 void InputEventFilter::OnChannelClosing() {
   sender_ = NULL;
 }
 
@@ skipping 107 matching lines @@
 void InputEventFilter::SendMessageOnIOThread(scoped_ptr<IPC::Message> message) {
   DCHECK(io_loop_->BelongsToCurrentThread());
 
   if (!sender_)
     return;  // Filter was removed.
 
   sender_->Send(message.release());
 }
 
 }  // namespace content