Broker out PPAPI handle duplication

ppapi/proxy/dispatcher.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 PPAPI_PROXY_DISPATCHER_H_
 #define PPAPI_PROXY_DISPATCHER_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 63 matching lines @@
   // each of the given interfaces.
 
   // IPC::Channel::Listener implementation.
   virtual bool OnMessageReceived(const IPC::Message& msg);
 
   PP_GetInterface_Func local_get_interface() const {
     return local_get_interface_;
   }
 
  protected:
-  Dispatcher(base::ProcessHandle remote_process_handle,
-             PP_GetInterface_Func local_get_interface);
+  explicit Dispatcher(PP_GetInterface_Func local_get_interface);
 
   // Setter for the derived classes to set the appropriate var serialization.
   // Takes one reference of the given pointer, which must be on the heap.
   void SetSerializationRules(VarSerializationRules* var_serialization_rules);
 
   // Called when an invalid message is received from the remote site. The
   // default implementation does nothing, derived classes can override.
   virtual void OnInvalidMessageReceived();
 
   bool disallow_trusted_interfaces() const {
@@ skipping 13 matching lines @@
 
   scoped_refptr<VarSerializationRules> serialization_rules_;
 
   DISALLOW_COPY_AND_ASSIGN(Dispatcher);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_DISPATCHER_H_