Rename nacl::RefCounted to nacl::RefCountedThreadSafe

ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_audio.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 NATIVE_CLIENT_SRC_SHARED_PPAPI_PROXY_PLUGIN_AUDIO_H_
 #define NATIVE_CLIENT_SRC_SHARED_PPAPI_PROXY_PLUGIN_AUDIO_H_
 
 #include <pthread.h>
 #include "native_client/src/include/nacl_base.h"
 #include "native_client/src/include/nacl_macros.h"
@@ skipping 13 matching lines @@
   AUDIO_PLAYING          // Audio in playback
 };
 
 // Implements the untrusted side of the PPB_Audio interface.
 // All methods in PluginAudio class will be invoked on the main thread.
 // The only exception is AudioThread(), which will invoke the application
 // supplied callback to periodically obtain more audio data.
 class PluginAudio : public PluginResource {
  public:
   PluginAudio();
-  virtual ~PluginAudio();
   void StreamCreated(NaClSrpcImcDescType socket,
       NaClSrpcImcDescType shm, size_t shm_size);
   void set_state(PluginAudioState state) { state_ = state; }
   void set_callback(PPB_Audio_Callback user_callback, void* user_data) {
       user_callback_ = user_callback;
       user_data_ = user_data;
   }
   PluginAudioState state() { return state_; }
   bool StartAudioThread();
   bool StopAudioThread();
   static void AudioThread(void* self);
   static const PPB_Audio* GetInterface();
   virtual bool InitFromBrowserResource(PP_Resource resource);
+
+ protected:
+  virtual ~PluginAudio();
+
  private:
   PP_Resource resource_;
   NaClSrpcImcDescType socket_;
   NaClSrpcImcDescType shm_;
   size_t shm_size_;
   void *shm_buffer_;
   PluginAudioState state_;
   uintptr_t thread_id_;
   bool thread_active_;
   PPB_Audio_Callback user_callback_;
   void* user_data_;
+
   IMPLEMENT_RESOURCE(PluginAudio);
   NACL_DISALLOW_COPY_AND_ASSIGN(PluginAudio);
 };
 
 }  // namespace ppapi_proxy
 
 #endif  // NATIVE_CLIENT_SRC_SHARED_PPAPI_PROXY_PLUGIN_AUDIO_H_