Standardize usage of virtual/override/final in remoting/

remoting/client/software_video_renderer.cc

Index: remoting/client/software_video_renderer.cc
diff --git a/remoting/client/software_video_renderer.cc b/remoting/client/software_video_renderer.cc
index 23049fc45027791b5556eec2e1088ddd6b71aedf..96758b3639dafc7d90461417f09308a62334ac2b 100644
--- a/remoting/client/software_video_renderer.cc
+++ b/remoting/client/software_video_renderer.cc
@@ -37,24 +37,24 @@ class RgbToBgrVideoDecoderFilter : public VideoDecoder {
       : parent_(parent.Pass()) {
   }
 
-  virtual void Initialize(const webrtc::DesktopSize& screen_size) override {
+  void Initialize(const webrtc::DesktopSize& screen_size) override {
     parent_->Initialize(screen_size);
   }
 
-  virtual bool DecodePacket(const VideoPacket& packet) override {
+  bool DecodePacket(const VideoPacket& packet) override {
     return parent_->DecodePacket(packet);
   }
 
-  virtual void Invalidate(const webrtc::DesktopSize& view_size,
-                          const webrtc::DesktopRegion& region) override {
+  void Invalidate(const webrtc::DesktopSize& view_size,
+                  const webrtc::DesktopRegion& region) override {
     return parent_->Invalidate(view_size, region);
   }
 
-  virtual void RenderFrame(const webrtc::DesktopSize& view_size,
-                           const webrtc::DesktopRect& clip_area,
-                           uint8* image_buffer,
-                           int image_stride,
-                           webrtc::DesktopRegion* output_region) override {
+  void RenderFrame(const webrtc::DesktopSize& view_size,
+                   const webrtc::DesktopRect& clip_area,
+                   uint8* image_buffer,
+                   int image_stride,
+                   webrtc::DesktopRegion* output_region) override {
     parent_->RenderFrame(view_size, clip_area, image_buffer, image_stride,
                          output_region);
 
@@ -68,7 +68,7 @@ class RgbToBgrVideoDecoderFilter : public VideoDecoder {
     }
   }
 
-  virtual const webrtc::DesktopRegion* GetImageShape() override {
+  const webrtc::DesktopRegion* GetImageShape() override {
     return parent_->GetImageShape();
   }