Rename IPC Sender and Listener in ppapi, content/public, and content/renderer

ppapi/proxy/host_dispatcher.h

Index: ppapi/proxy/host_dispatcher.h
diff --git a/ppapi/proxy/host_dispatcher.h b/ppapi/proxy/host_dispatcher.h
index 70dd08a2a47ee3670c2af59653e77f23b8b1899f..6c4dd2d5bad7d8c46f6c4ecc2b111963654e2e10 100644
--- a/ppapi/proxy/host_dispatcher.h
+++ b/ppapi/proxy/host_dispatcher.h
@@ -9,6 +9,7 @@
 #include <string>
 #include <vector>
 
+#include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/process.h"
 #include "ipc/ipc_channel_proxy.h"
@@ -78,9 +79,9 @@ class PPAPI_PROXY_EXPORT HostDispatcher : public Dispatcher {
   virtual bool IsPlugin() const;
   virtual bool Send(IPC::Message* msg);
 
-  // IPC::Channel::Listener.
-  virtual bool OnMessageReceived(const IPC::Message& msg);
-  virtual void OnChannelError();
+  // IPC::Listener.
+  virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
+  virtual void OnChannelError() OVERRIDE;
 
   // Proxied version of calling GetInterface on the plugin. This will check
   // if the plugin supports the given interface (with caching) and returns the