Broker out PPAPI handle duplication

ppapi/proxy/broker_dispatcher.h

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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 PPAPI_PROXY_BROKER_DISPATCHER_H_
 #define PPAPI_PROXY_BROKER_DISPATCHER_H_
 #pragma once
 
 #include "base/compiler_specific.h"
 #include "ppapi/c/trusted/ppp_broker.h"
 #include "ppapi/proxy/proxy_channel.h"
@@ skipping 10 matching lines @@
   // transferred.
   virtual bool InitBrokerWithChannel(ProxyChannel::Delegate* delegate,
                                      const IPC::ChannelHandle& channel_handle,
                                      bool is_client);
 
   // IPC::Channel::Listener implementation.
   virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
 
  protected:
   // You must call InitBrokerWithChannel after the constructor.
-  BrokerDispatcher(base::ProcessHandle remote_process_handle,
-                   PP_ConnectInstance_Func connect_instance);
+  explicit BrokerDispatcher(PP_ConnectInstance_Func connect_instance);
 
   void OnMsgConnectToPlugin(PP_Instance instance,
                             IPC::PlatformFileForTransit handle,
                             int32_t* result);
 
   PP_ConnectInstance_Func connect_instance_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(BrokerDispatcher);
 };
 
 // The dispatcher for the browser side of the broker channel.
 class PPAPI_PROXY_EXPORT BrokerHostDispatcher : public BrokerDispatcher {
  public:
-  BrokerHostDispatcher(base::ProcessHandle remote_process_handle);
+  BrokerHostDispatcher();
 
   // IPC::Channel::Listener implementation.
   virtual void OnChannelError() OVERRIDE;
 };
 
 // The dispatcher for the broker side of the broker channel.
 class PPAPI_PROXY_EXPORT BrokerSideDispatcher : public BrokerDispatcher {
  public:
-  BrokerSideDispatcher(base::ProcessHandle remote_process_handle,
-                       PP_ConnectInstance_Func connect_instance);
+  explicit BrokerSideDispatcher(PP_ConnectInstance_Func connect_instance);
 
   // IPC::Channel::Listener implementation.
   virtual void OnChannelError() OVERRIDE;
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_BROKER_DISPATCHER_H_