Update PPAPI IDL generator to define versioned structs, and unversioned typedef.

ppapi/proxy/ppb_audio_input_proxy.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_PPB_AUDIO_INPUT_PROXY_H_
 #define PPAPI_PPB_AUDIO_INPUT_PROXY_H_
 
 #include <utility>
 
 #include "base/basictypes.h"
 #include "base/shared_memory.h"
 #include "base/sync_socket.h"
 #include "ipc/ipc_platform_file.h"
 #include "ppapi/c/dev/ppb_audio_input_dev.h"
 #include "ppapi/c/ppb_audio_config.h"
 #include "ppapi/cpp/completion_callback.h"
 #include "ppapi/proxy/interface_proxy.h"
 #include "ppapi/proxy/proxy_non_thread_safe_ref_count.h"
 
-struct PPB_AudioInput_Dev;
-
 namespace ppapi {
 
 class HostResource;
 
 namespace proxy {
 
 class PPB_AudioInput_Proxy : public InterfaceProxy {
  public:
   explicit PPB_AudioInput_Proxy(Dispatcher* dispatcher);
   virtual ~PPB_AudioInput_Proxy();
@@ skipping 45 matching lines @@
   pp::CompletionCallbackFactory<PPB_AudioInput_Proxy,
                                 ProxyNonThreadSafeRefCount> callback_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PPB_AudioInput_Proxy);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PPB_AUDIO_INPUT_PROXY_H_