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

content/common/gpu/stream_texture_android.h

Index: content/common/gpu/stream_texture_android.h
diff --git a/content/common/gpu/stream_texture_android.h b/content/common/gpu/stream_texture_android.h
index 066d4faa72705880eae45f58905fec8caccd1d17..72e4ed4dee0a1f90f3f91cb0303732fb23f08e55 100644
--- a/content/common/gpu/stream_texture_android.h
+++ b/content/common/gpu/stream_texture_android.h
@@ -30,32 +30,32 @@ class StreamTexture : public gfx::GLImage,
   StreamTexture(GpuCommandBufferStub* owner_stub,
                 int32 route_id,
                 uint32 texture_id);
-  virtual ~StreamTexture();
+  ~StreamTexture() override;
 
   // gfx::GLImage implementation:
-  virtual void Destroy(bool have_context) override;
-  virtual gfx::Size GetSize() override;
-  virtual bool BindTexImage(unsigned target) override;
-  virtual void ReleaseTexImage(unsigned target) override;
-  virtual bool CopyTexImage(unsigned target) override;
-  virtual void WillUseTexImage() override;
-  virtual void DidUseTexImage() override {}
-  virtual void WillModifyTexImage() override {}
-  virtual void DidModifyTexImage() override {}
-  virtual bool ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
-                                    int z_order,
-                                    gfx::OverlayTransform transform,
-                                    const gfx::Rect& bounds_rect,
-                                    const gfx::RectF& crop_rect) override;
+  void Destroy(bool have_context) override;
+  gfx::Size GetSize() override;
+  bool BindTexImage(unsigned target) override;
+  void ReleaseTexImage(unsigned target) override;
+  bool CopyTexImage(unsigned target) override;
+  void WillUseTexImage() override;
+  void DidUseTexImage() override {}
+  void WillModifyTexImage() override {}
+  void DidModifyTexImage() override {}
+  bool ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
+                            int z_order,
+                            gfx::OverlayTransform transform,
+                            const gfx::Rect& bounds_rect,
+                            const gfx::RectF& crop_rect) override;
 
   // GpuCommandBufferStub::DestructionObserver implementation.
-  virtual void OnWillDestroyStub() override;
+  void OnWillDestroyStub() override;
 
   // Called when a new frame is available for the SurfaceTexture.
   void OnFrameAvailable();
 
   // IPC::Listener implementation:
-  virtual bool OnMessageReceived(const IPC::Message& message) override;
+  bool OnMessageReceived(const IPC::Message& message) override;
 
   // IPC message handlers:
   void OnStartListening();