Standardize usage of virtual/override/final specifiers.

ash/keyboard_overlay/keyboard_overlay_delegate.h

Index: ash/keyboard_overlay/keyboard_overlay_delegate.h
diff --git a/ash/keyboard_overlay/keyboard_overlay_delegate.h b/ash/keyboard_overlay/keyboard_overlay_delegate.h
index d9f8cf2bb2b25d9a235584ec9ad15dcf370aa5bf..ef92dead1636aff67bc70990dd7275be481f123e 100644
--- a/ash/keyboard_overlay/keyboard_overlay_delegate.h
+++ b/ash/keyboard_overlay/keyboard_overlay_delegate.h
@@ -29,26 +29,25 @@ class ASH_WITH_CONTENT_EXPORT KeyboardOverlayDelegate
   views::Widget* Show(views::WebDialogView* view);
 
   // Overridden from ui::WebDialogDelegate:
-  virtual void GetDialogSize(gfx::Size* size) const override;
+  void GetDialogSize(gfx::Size* size) const override;
 
  private:
   FRIEND_TEST_ALL_PREFIXES(KeyboardOverlayDelegateTest, ShowAndClose);
 
-  virtual ~KeyboardOverlayDelegate();
+  ~KeyboardOverlayDelegate() override;
 
   // Overridden from ui::WebDialogDelegate:
-  virtual ui::ModalType GetDialogModalType() const override;
-  virtual base::string16 GetDialogTitle() const override;
-  virtual GURL GetDialogContentURL() const override;
-  virtual void GetWebUIMessageHandlers(
+  ui::ModalType GetDialogModalType() const override;
+  base::string16 GetDialogTitle() const override;
+  GURL GetDialogContentURL() const override;
+  void GetWebUIMessageHandlers(
       std::vector<content::WebUIMessageHandler*>* handlers) const override;
-  virtual std::string GetDialogArgs() const override;
-  virtual void OnDialogClosed(const std::string& json_retval) override;
-  virtual void OnCloseContents(content::WebContents* source,
-                               bool* out_close_dialog) override;
-  virtual bool ShouldShowDialogTitle() const override;
-  virtual bool HandleContextMenu(
-      const content::ContextMenuParams& params) override;
+  std::string GetDialogArgs() const override;
+  void OnDialogClosed(const std::string& json_retval) override;
+  void OnCloseContents(content::WebContents* source,
+                       bool* out_close_dialog) override;
+  bool ShouldShowDialogTitle() const override;
+  bool HandleContextMenu(const content::ContextMenuParams& params) override;
 
   // The dialog title.
   base::string16 title_;