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

ppapi/native_client/tests/ppapi_simple_tests/audio.cc

 // 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.
 //
 
 #include <stdint.h>
 
 #include <cmath>
 #include <limits>
 #include <string>
@@ skipping 59 matching lines @@
     }
   }
 
   void ExtraChecks(pp::AudioConfig* config) {
     CHECK(obtained_sample_frame_count_ >= PP_AUDIOMINSAMPLEFRAMECOUNT);
     CHECK(obtained_sample_frame_count_ <= PP_AUDIOMAXSAMPLEFRAMECOUNT);
 
     PPB_GetInterface get_browser_if =
         pp::Module::Get()->get_browser_interface();
 
-    const struct PPB_AudioConfig* audio_config_if =
-        static_cast<const struct PPB_AudioConfig*>(
+    const PPB_AudioConfig* audio_config_if =
+        static_cast<const PPB_AudioConfig*>(
         get_browser_if(PPB_AUDIO_CONFIG_INTERFACE));
 
-    const struct PPB_Audio* audio_if =
-        static_cast<const struct PPB_Audio*>(
+    const PPB_Audio* audio_if =
+        static_cast<const PPB_Audio*>(
           get_browser_if(PPB_AUDIO_INTERFACE));
 
     CHECK(NULL != audio_config_if);
     CHECK(NULL != audio_if);
 
     const PP_Resource audio_config_res = config->pp_resource();
     const PP_Resource audio_res = audio_.pp_resource();
 
     CHECK(PP_TRUE == audio_config_if->IsAudioConfig(audio_config_res));
     CHECK(PP_TRUE == audio_if->IsAudio(audio_res));
@@ skipping 50 matching lines @@
     return new MyInstance(instance);
   }
 };
 
 namespace pp {
 Module* CreateModule() {
   return new MyModule();
 }
 
 }  // namespace pp