Add a way to implement GetInterface in the broker.

ppapi/proxy/proxy_channel.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 PPAPI_PROXY_PROXY_CHANNEL_H_
 #define PPAPI_PROXY_PROXY_CHANNEL_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/process.h"
 #include "ipc/ipc_message.h"
@@ skipping 10 matching lines @@
 class TestSink;
 }
 
 namespace ppapi {
 namespace proxy {
 
 class PPAPI_PROXY_EXPORT ProxyChannel
     : public IPC::Channel::Listener,
       public IPC::Message::Sender {
  public:
-  typedef void (*ShutdownModuleFunc)();
-
   class PPAPI_PROXY_EXPORT Delegate {
    public:
     virtual ~Delegate() {}
 
     // Returns the dedicated message loop for processing IPC requests.
     virtual base::MessageLoopProxy* GetIPCMessageLoop() = 0;
 
     // Returns the event object that becomes signalled when the main thread's
     // message loop exits.
     virtual base::WaitableEvent* GetShutdownEvent() = 0;
@@ skipping 60 matching lines @@
   // remote side has crashed.
   scoped_ptr<IPC::SyncChannel> channel_;
 
   DISALLOW_COPY_AND_ASSIGN(ProxyChannel);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_PROXY_CHANNEL_H_