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

content/browser/android/composited_touch_handle_drawable.h

Index: content/browser/android/composited_touch_handle_drawable.h
diff --git a/content/browser/android/composited_touch_handle_drawable.h b/content/browser/android/composited_touch_handle_drawable.h
index 849f7b57c1479ebcfba9ba03ba14e12d439b5127..28c6910b9d437dfa96c8a2962c2dc03c8ce6033f 100644
--- a/content/browser/android/composited_touch_handle_drawable.h
+++ b/content/browser/android/composited_touch_handle_drawable.h
@@ -18,14 +18,14 @@ class CompositedTouchHandleDrawable : public ui::TouchHandleDrawable {
   CompositedTouchHandleDrawable(cc::Layer* root_layer,
                                 float dpi_scale,
                                 jobject context);
-  virtual ~CompositedTouchHandleDrawable();
+  ~CompositedTouchHandleDrawable() 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 RegisterHandleViewResources(JNIEnv* env);