Standardize usage of virtual/override/final specifiers.

chrome/browser/ui/views/dropdown_bar_view.h

Index: chrome/browser/ui/views/dropdown_bar_view.h
diff --git a/chrome/browser/ui/views/dropdown_bar_view.h b/chrome/browser/ui/views/dropdown_bar_view.h
index 0d24ba784965ed3d5e24faa61e89f7e3d433f605..64b6951e37b74f667fe774597db67e9a94582494 100644
--- a/chrome/browser/ui/views/dropdown_bar_view.h
+++ b/chrome/browser/ui/views/dropdown_bar_view.h
@@ -24,18 +24,18 @@ class DropdownBarView : public views::AccessiblePaneView,
                         public DropdownBarHostDelegate {
  public:
   explicit DropdownBarView(DropdownBarHost* host);
-  virtual ~DropdownBarView();
+  ~DropdownBarView() override;
 
   // Updates the view to let it know where the host is clipping the
   // dropdown widget (while animating the opening or closing of the widget).
-  virtual void SetAnimationOffset(int offset) override;
+  void SetAnimationOffset(int offset) override;
 
   // Returns the offset used while animating.
   int animation_offset() const { return animation_offset_; }
 
  protected:
   // views::View:
-  virtual void OnPaint(gfx::Canvas* canvas) override;
+  void OnPaint(gfx::Canvas* canvas) override;
 
   // Returns the DropdownBarHost that manages this view.
   DropdownBarHost* host() const { return host_; }