Refactor RenderProcessHost to use IPC::Listener instead of RenderWidgetHost

content/browser/renderer_host/render_widget_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_RENDER_WIDGET_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 
 #include <deque>
 #include <list>
 #include <map>
@@ skipping 76 matching lines @@
  public:
   // routing_id can be MSG_ROUTING_NONE, in which case the next available
   // routing id is taken from the RenderProcessHost.
   // If this object outlives |delegate|, DetachDelegate() must be called when
   // |delegate| goes away.
   RenderWidgetHostImpl(RenderWidgetHostDelegate* delegate,
                        RenderProcessHost* process,
                        int routing_id);
   virtual ~RenderWidgetHostImpl();
 
+  // Similar to RenderWidgetHost::FromID, but returning the Impl object.
+  static RenderWidgetHostImpl* FromID(int32 process_id, int32 routing_id);
+
   // Use RenderWidgetHostImpl::From(rwh) to downcast a
   // RenderWidgetHost to a RenderWidgetHostImpl.  Internally, this
   // uses RenderWidgetHost::AsRenderWidgetHostImpl().
   static RenderWidgetHostImpl* From(RenderWidgetHost* rwh);
 
   void set_hung_renderer_delay_ms(const base::TimeDelta& timeout) {
     hung_renderer_delay_ms_ = timeout.InMilliseconds();
   }
 
   // RenderWidgetHost implementation.
@@ skipping 828 matching lines @@
   int64 last_input_number_;
 
   BrowserRenderingStats rendering_stats_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_