Standardize usage of virtual/override/final specifiers.

chrome/browser/ui/views/autofill/info_bubble.cc

Index: chrome/browser/ui/views/autofill/info_bubble.cc
diff --git a/chrome/browser/ui/views/autofill/info_bubble.cc b/chrome/browser/ui/views/autofill/info_bubble.cc
index 048bc6125169c0207693dcd265ee10e5b617b215..e53903beb7953fe4ebaa2233df652954186d94f3 100644
--- a/chrome/browser/ui/views/autofill/info_bubble.cc
+++ b/chrome/browser/ui/views/autofill/info_bubble.cc
@@ -34,9 +34,9 @@ class InfoBubbleFrame : public views::BubbleFrameView {
  public:
   explicit InfoBubbleFrame(const gfx::Insets& content_margins)
       : views::BubbleFrameView(content_margins) {}
-  virtual ~InfoBubbleFrame() {}
+  ~InfoBubbleFrame() override {}
 
-  virtual gfx::Rect GetAvailableScreenBounds(const gfx::Rect& rect) override {
+  gfx::Rect GetAvailableScreenBounds(const gfx::Rect& rect) override {
     return available_bounds_;
   }