Update {virtual,override} to follow C++11 style in ppapi.

ppapi/proxy/ppb_video_decoder_proxy.cc

 // Copyright (c) 2012 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 "ppapi/proxy/ppb_video_decoder_proxy.h"
 
 #include "base/logging.h"
 #include "base/numerics/safe_conversions.h"
 #include "gpu/command_buffer/client/gles2_implementation.h"
 #include "ppapi/proxy/enter_proxy.h"
@@ skipping 10 matching lines @@
 using ppapi::thunk::PPB_Graphics3D_API;
 using ppapi::thunk::PPB_VideoDecoder_Dev_API;
 
 namespace ppapi {
 namespace proxy {
 
 class VideoDecoder : public PPB_VideoDecoder_Shared {
  public:
   // You must call Init() before using this class.
   explicit VideoDecoder(const HostResource& resource);
-  virtual ~VideoDecoder();
+  ~VideoDecoder() override;
 
   static VideoDecoder* Create(const HostResource& resource,
                               PP_Resource graphics_context,
                               PP_VideoDecoder_Profile profile);
 
   // PPB_VideoDecoder_Dev_API implementation.
-  virtual int32_t Decode(const PP_VideoBitstreamBuffer_Dev* bitstream_buffer,
-                         scoped_refptr<TrackedCallback> callback) override;
-  virtual void AssignPictureBuffers(
-      uint32_t no_of_buffers, const PP_PictureBuffer_Dev* buffers) override;
-  virtual void ReusePictureBuffer(int32_t picture_buffer_id) override;
-  virtual int32_t Flush(scoped_refptr<TrackedCallback> callback) override;
-  virtual int32_t Reset(scoped_refptr<TrackedCallback> callback) override;
-  virtual void Destroy() override;
+  int32_t Decode(const PP_VideoBitstreamBuffer_Dev* bitstream_buffer,
+                 scoped_refptr<TrackedCallback> callback) override;
+  void AssignPictureBuffers(uint32_t no_of_buffers,
+                            const PP_PictureBuffer_Dev* buffers) override;
+  void ReusePictureBuffer(int32_t picture_buffer_id) override;
+  int32_t Flush(scoped_refptr<TrackedCallback> callback) override;
+  int32_t Reset(scoped_refptr<TrackedCallback> callback) override;
+  void Destroy() override;
 
  private:
   friend class PPB_VideoDecoder_Proxy;
 
   PluginDispatcher* GetDispatcher() const;
 
   // Run the callbacks that were passed into the plugin interface.
   void FlushACK(int32_t result);
   void ResetACK(int32_t result);
   void EndOfBitstreamACK(int32_t buffer_id, int32_t result);
@@ skipping 260 matching lines @@
 
 void PPB_VideoDecoder_Proxy::OnMsgResetACK(
     const HostResource& decoder, int32_t result) {
   EnterPluginFromHostResource<PPB_VideoDecoder_Dev_API> enter(decoder);
   if (enter.succeeded())
     static_cast<VideoDecoder*>(enter.object())->ResetACK(result);
 }
 
 }  // namespace proxy
 }  // namespace ppapi