Move IPC::MessageFilter and router to a separate file

content/common/child_process_host_impl.cc

 // Copyright (c) 2012 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/common/child_process_host_impl.h"
 
 #include <limits>
 
 #include "base/atomic_sequence_num.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/path_service.h"
 #include "base/process/process_metrics.h"
 #include "base/rand_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/third_party/dynamic_annotations/dynamic_annotations.h"
 #include "content/common/child_process_messages.h"
 #include "content/common/gpu/client/gpu_memory_buffer_impl.h"
 #include "content/public/common/child_process_host_delegate.h"
 #include "content/public/common/content_paths.h"
 #include "content/public/common/content_switches.h"
 #include "ipc/ipc_channel.h"
 #include "ipc/ipc_logging.h"
+#include "ipc/message_filter.h"
 
 #if defined(OS_LINUX)
 #include "base/linux_util.h"
 #elif defined(OS_WIN)
 #include "content/common/font_cache_dispatcher_win.h"
 #endif  // OS_LINUX
 
 namespace {
 
 #if defined(OS_MACOSX)
@@ skipping 107 matching lines @@
 
 ChildProcessHostImpl::~ChildProcessHostImpl() {
   for (size_t i = 0; i < filters_.size(); ++i) {
     filters_[i]->OnChannelClosing();
     filters_[i]->OnFilterRemoved();
   }
 
   base::CloseProcessHandle(peer_handle_);
 }
 
-void ChildProcessHostImpl::AddFilter(IPC::ChannelProxy::MessageFilter* filter) {
+void ChildProcessHostImpl::AddFilter(IPC::MessageFilter* filter) {
   filters_.push_back(filter);
 
   if (channel_)
     filter->OnFilterAdded(channel_.get());
 }
 
 void ChildProcessHostImpl::ForceShutdown() {
   Send(new ChildProcessMsg_Shutdown());
 }
 
@@ skipping 145 matching lines @@
     uint32 internalformat,
     gfx::GpuMemoryBufferHandle* handle) {
   handle->type = gfx::SHARED_MEMORY_BUFFER;
   AllocateSharedMemory(
       width * height * GpuMemoryBufferImpl::BytesPerPixel(internalformat),
       peer_handle_,
       &handle->handle);
 }
 
 }  // namespace content