Standardize usage of virtual/override/final specifiers.

ui/views/bubble/bubble_frame_view_unittest.cc

Index: ui/views/bubble/bubble_frame_view_unittest.cc
diff --git a/ui/views/bubble/bubble_frame_view_unittest.cc b/ui/views/bubble/bubble_frame_view_unittest.cc
index 545ca3875cbb91ec473e6c4460342f86f2c2d3a8..17fd9421c5b6ce875f0ae070e2f21c1ce752b1f7 100644
--- a/ui/views/bubble/bubble_frame_view_unittest.cc
+++ b/ui/views/bubble/bubble_frame_view_unittest.cc
@@ -26,10 +26,10 @@ class TestBubbleFrameView : public BubbleFrameView {
     SetBubbleBorder(scoped_ptr<views::BubbleBorder>(
         new BubbleBorder(kArrow, BubbleBorder::NO_SHADOW, kColor)));
   }
-  virtual ~TestBubbleFrameView() {}
+  ~TestBubbleFrameView() override {}
 
   // BubbleFrameView overrides:
-  virtual gfx::Rect GetAvailableScreenBounds(const gfx::Rect& rect) override {
+  gfx::Rect GetAvailableScreenBounds(const gfx::Rect& rect) override {
     return available_bounds_;
   }