Rename nacl::RefCounted to nacl::RefCountedThreadSafe

ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_buffer.h

Index: ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_buffer.h
diff --git a/ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_buffer.h b/ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_buffer.h
index beb1ed8cc630941e8eabb7dfe47373a3a7bc9525..672ce78dfbe3b3fc9a3d6ae681e43926df52efe5 100644
--- a/ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_buffer.h
+++ b/ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_buffer.h
@@ -1,6 +1,6 @@
-// Copyright 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.
+// 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_BUFFER_H_
 #define NATIVE_CLIENT_SRC_SHARED_PPAPI_PROXY_PLUGIN_BUFFER_H_
@@ -16,6 +16,9 @@ class PluginBuffer : public PluginResource {
  public:
   static const PPB_Buffer_Dev* GetInterface();
 
+ protected:
+  virtual ~PluginBuffer() {}
+
  private:
   IMPLEMENT_RESOURCE(PluginBuffer);
   NACL_DISALLOW_COPY_AND_ASSIGN(PluginBuffer);