Standardize usage of virtual/override/final in chrome/browser/task_manager/

chrome/browser/task_manager/tab_contents_information.cc

Index: chrome/browser/task_manager/tab_contents_information.cc
diff --git a/chrome/browser/task_manager/tab_contents_information.cc b/chrome/browser/task_manager/tab_contents_information.cc
index 1f401498b68107ff5c8880a7dc2370e3e432dbde..608763153fa33094ac816249c97c619ad40cac87 100644
--- a/chrome/browser/task_manager/tab_contents_information.cc
+++ b/chrome/browser/task_manager/tab_contents_information.cc
@@ -53,13 +53,13 @@ bool IsContentsPrerendering(WebContents* web_contents) {
 class TabContentsResource : public RendererResource {
  public:
   explicit TabContentsResource(content::WebContents* web_contents);
-  virtual ~TabContentsResource();
+  ~TabContentsResource() override;
 
   // Resource methods:
-  virtual Type GetType() const override;
-  virtual base::string16 GetTitle() const override;
-  virtual gfx::ImageSkia GetIcon() const override;
-  virtual content::WebContents* GetWebContents() const override;
+  Type GetType() const override;
+  base::string16 GetTitle() const override;
+  gfx::ImageSkia GetIcon() const override;
+  content::WebContents* GetWebContents() const override;
 
  private:
   // Returns true if contains content rendered by an extension.