Use IPC::Sender and IPC::Listener in content.

content/browser/renderer_host/render_view_host_delegate.h

Index: content/browser/renderer_host/render_view_host_delegate.h
diff --git a/content/browser/renderer_host/render_view_host_delegate.h b/content/browser/renderer_host/render_view_host_delegate.h
index 2f04c59d2ce6ee1811a388ed27f2256898acefb1..501a0b3bc4a5f0bf5887c9d65a86e434a77c7893 100644
--- a/content/browser/renderer_host/render_view_host_delegate.h
+++ b/content/browser/renderer_host/render_view_host_delegate.h
@@ -72,7 +72,7 @@ typedef base::Callback< void(const MediaStreamDevices&) > MediaResponseCallback;
 //  may not be relevant to all users of RenderViewHost and we should consider
 //  exposing a more generic Send function on RenderViewHost and a response
 //  listener here to serve that need.
-class CONTENT_EXPORT RenderViewHostDelegate : public IPC::Channel::Listener {
+class CONTENT_EXPORT RenderViewHostDelegate : public IPC::Listener {
  public:
   // RendererManagerment -------------------------------------------------------
   // Functions for managing switching of Renderers. For WebContents, this is
@@ -108,7 +108,7 @@ class CONTENT_EXPORT RenderViewHostDelegate : public IPC::Channel::Listener {
   virtual RenderViewHostDelegateView* GetDelegateView();
   virtual RendererManagement* GetRendererManagementDelegate();
 
-  // IPC::Channel::Listener implementation.
+  // IPC::Listener implementation.
   // This is used to give the delegate a chance to filter IPC messages.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;