Update {virtual,override} to follow C++11 style in content/common/gpu/media

content/common/gpu/media/v4l2_video_encode_accelerator.h

Index: content/common/gpu/media/v4l2_video_encode_accelerator.h
diff --git a/content/common/gpu/media/v4l2_video_encode_accelerator.h b/content/common/gpu/media/v4l2_video_encode_accelerator.h
index 3be5a837abbbdae18fcf8e8addee88d87efdd74a..7432082c935db27b1fa04a5fbf4aa7e6c88180c6 100644
--- a/content/common/gpu/media/v4l2_video_encode_accelerator.h
+++ b/content/common/gpu/media/v4l2_video_encode_accelerator.h
@@ -43,23 +43,23 @@ class CONTENT_EXPORT V4L2VideoEncodeAccelerator
     : public media::VideoEncodeAccelerator {
  public:
   explicit V4L2VideoEncodeAccelerator(const scoped_refptr<V4L2Device>& device);
-  virtual ~V4L2VideoEncodeAccelerator();
+  ~V4L2VideoEncodeAccelerator() override;
 
   // media::VideoEncodeAccelerator implementation.
-  virtual std::vector<media::VideoEncodeAccelerator::SupportedProfile>
+  std::vector<media::VideoEncodeAccelerator::SupportedProfile>
       GetSupportedProfiles() override;
-  virtual bool Initialize(media::VideoFrame::Format format,
+  bool Initialize(media::VideoFrame::Format format,
                           const gfx::Size& input_visible_size,

[Pawel Osciak, 2015/02/12 04:55:12]

Incorrect indent.

                           media::VideoCodecProfile output_profile,
                           uint32 initial_bitrate,
                           Client* client) override;
-  virtual void Encode(const scoped_refptr<media::VideoFrame>& frame,
+  void Encode(const scoped_refptr<media::VideoFrame>& frame,
                       bool force_keyframe) override;

[Pawel Osciak, 2015/02/12 04:55:12]

Ditto.

-  virtual void UseOutputBitstreamBuffer(const media::BitstreamBuffer& buffer)
+  void UseOutputBitstreamBuffer(const media::BitstreamBuffer& buffer)
       override;
-  virtual void RequestEncodingParametersChange(uint32 bitrate,
+  void RequestEncodingParametersChange(uint32 bitrate,
                                                uint32 framerate) override;

[Pawel Osciak, 2015/02/12 04:55:12]

Ditto.

-  virtual void Destroy() override;
+  void Destroy() override;
 
  private:
   // Auto-destroy reference for BitstreamBuffer, for tracking buffers passed to