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

components/web_contents_delegate_android/color_chooser_android.h

Index: components/web_contents_delegate_android/color_chooser_android.h
diff --git a/components/web_contents_delegate_android/color_chooser_android.h b/components/web_contents_delegate_android/color_chooser_android.h
index 3966d1b206a7cc5aa5688a1c063a1e0426a4c0b8..27042b015400e8c198812bd440133a9c639d2ff6 100644
--- a/components/web_contents_delegate_android/color_chooser_android.h
+++ b/components/web_contents_delegate_android/color_chooser_android.h
@@ -28,13 +28,13 @@ class ColorChooserAndroid : public content::ColorChooser {
   ColorChooserAndroid(content::WebContents* tab,
                       SkColor initial_color,
                       const std::vector<content::ColorSuggestion>& suggestions);
-  virtual ~ColorChooserAndroid();
+  ~ColorChooserAndroid() override;
 
   void OnColorChosen(JNIEnv* env, jobject obj, jint color);
 
   // ColorChooser interface
-  virtual void End() override;
-  virtual void SetSelectedColor(SkColor color) override;
+  void End() override;
+  void SetSelectedColor(SkColor color) override;
 
  private:
   base::android::ScopedJavaGlobalRef<jobject> j_color_chooser_;