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

content/browser/android/popup_touch_handle_drawable.h

Index: content/browser/android/popup_touch_handle_drawable.h
diff --git a/content/browser/android/popup_touch_handle_drawable.h b/content/browser/android/popup_touch_handle_drawable.h
index e7f46ca723721e7c91f2491aca6db75544a99ff6..5b5c334e8a5ad2fb658eeaf0aaee40d2a73e14de 100644
--- a/content/browser/android/popup_touch_handle_drawable.h
+++ b/content/browser/android/popup_touch_handle_drawable.h
@@ -16,14 +16,14 @@ class PopupTouchHandleDrawable : public ui::TouchHandleDrawable {
  public:
   PopupTouchHandleDrawable(base::android::ScopedJavaLocalRef<jobject> drawable,
                            float dpi_scale);
-  virtual ~PopupTouchHandleDrawable();
+  ~PopupTouchHandleDrawable() override;
 
   // ui::TouchHandleDrawable implementation.
-  virtual void SetEnabled(bool enabled) override;
-  virtual void SetOrientation(ui::TouchHandleOrientation orientation) override;
-  virtual void SetAlpha(float alpha) override;
-  virtual void SetFocus(const gfx::PointF& position) override;
-  virtual gfx::RectF GetVisibleBounds() const override;
+  void SetEnabled(bool enabled) override;
+  void SetOrientation(ui::TouchHandleOrientation orientation) override;
+  void SetAlpha(float alpha) override;
+  void SetFocus(const gfx::PointF& position) override;
+  gfx::RectF GetVisibleBounds() const override;
 
   static bool RegisterPopupTouchHandleDrawable(JNIEnv* env);