Decouple IPC::MessageFilter from IPC::Channel

content/browser/renderer_host/render_process_host_impl.h

 // 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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_BROWSER_RENDER_PROCESS_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_BROWSER_RENDER_PROCESS_HOST_IMPL_H_
 
 #include <map>
 #include <queue>
 #include <string>
@@ skipping 25 matching lines @@
 }
 
 namespace gfx {
 class Size;
 struct GpuMemoryBufferHandle;
 }
 
 namespace content {
 class AudioRendererHost;
 class BrowserDemuxerAndroid;
+class BrowserMessageFilterPeer;
 class GpuMessageFilter;
 class MessagePortMessageFilter;
 class MojoApplicationHost;
 #if defined(ENABLE_WEBRTC)
 class P2PSocketDispatcherHost;
 #endif
 class PeerConnectionTrackerHost;
 class RendererMainThread;
 class RenderProcessHostMojoImpl;
 class RenderWidgetHelper;
@@ skipping 298 matching lines @@
   // backgrounded.
   int32 visible_widgets_;
 
   // Does this process have backgrounded priority.
   bool backgrounded_;
 
   // Used to allow a RenderWidgetHost to intercept various messages on the
   // IO thread.
   scoped_refptr<RenderWidgetHelper> widget_helper_;
 
+  // Passed to added browser filters
+  scoped_ptr<BrowserMessageFilterPeer> filter_peer_;
+
   // The filter for GPU-related messages coming from the renderer.
   // Thread safety note: this field is to be accessed from the UI thread.
   // We don't keep a reference to it, to avoid it being destroyed on the UI
   // thread, but we clear this field when we clear channel_. When channel_ goes
   // away, it posts a task to the IO thread to destroy it there, so we know that
   // it's valid if non-NULL.
   GpuMessageFilter* gpu_message_filter_;
 
   // The filter for MessagePort messages coming from the renderer.
   scoped_refptr<MessagePortMessageFilter> message_port_message_filter_;
@@ skipping 90 matching lines @@
 #if defined(OS_MACOSX)
   base::ScopedCFTypeRef<IOSurfaceRef> last_io_surface_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(RenderProcessHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_BROWSER_RENDER_PROCESS_HOST_IMPL_H_