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

content/browser/android/content_view_render_view.h

Index: content/browser/android/content_view_render_view.h
diff --git a/content/browser/android/content_view_render_view.h b/content/browser/android/content_view_render_view.h
index 0b09b381d5125193be7e207711bcfaec78ca0602..c79936db30bb792acaa76fac0e8aff0246d68236 100644
--- a/content/browser/android/content_view_render_view.h
+++ b/content/browser/android/content_view_render_view.h
@@ -47,11 +47,11 @@ class ContentViewRenderView : public CompositorClient {
   jlong GetUIResourceProvider(JNIEnv* env, jobject obj);
 
   // CompositorClient implementation
-  virtual void Layout() override;
-  virtual void OnSwapBuffersCompleted(int pending_swap_buffers) override;
+  void Layout() override;
+  void OnSwapBuffersCompleted(int pending_swap_buffers) override;
 
  private:
-  virtual ~ContentViewRenderView();
+  ~ContentViewRenderView() override;
 
   void InitCompositor();