Implemented PPB_Broker_Proxy.

webkit/plugins/ppapi/ppb_broker_impl.h

 // Copyright (c) 2011 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 WEBKIT_PLUGINS_PPAPI_PPB_BROKER_IMPL_H_
 #define WEBKIT_PLUGINS_PPAPI_PPB_BROKER_IMPL_H_
 
 #include "base/basictypes.h"
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/trusted/ppb_broker_trusted.h"
@@ skipping 26 matching lines @@
 
  private:
   // PluginDelegate ppapi broker object.
   // We don't own this pointer but are responsible for calling Release on it.
   scoped_refptr<PluginDelegate::PpapiBroker> broker_;
 
   // Callback invoked from BrokerConnected.
   scoped_refptr<TrackedCompletionCallback> connect_callback_;
 
   // Pipe handle for the plugin instance to use to communicate with the broker.
+  // Never owned by this object.
   int32_t pipe_handle_;
 
   DISALLOW_COPY_AND_ASSIGN(PPB_Broker_Impl);
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_PPB_BROKER_IMPL_H_