Add OVERRIDE to chrome/browser/ui/webui/.

chrome/browser/ui/webui/favicon_source.h

Index: chrome/browser/ui/webui/favicon_source.h
diff --git a/chrome/browser/ui/webui/favicon_source.h b/chrome/browser/ui/webui/favicon_source.h
index cbf417ee2d58d876978032dbf8c725e1e9ff0062..fb23744ddc0ef482a5f6508c7663cfec8e6164c3 100644
--- a/chrome/browser/ui/webui/favicon_source.h
+++ b/chrome/browser/ui/webui/favicon_source.h
@@ -35,11 +35,11 @@ class FaviconSource : public ChromeURLDataManager::DataSource {
   // the path we registered.
   virtual void StartDataRequest(const std::string& path,
                                 bool is_incognito,
-                                int request_id);
+                                int request_id) OVERRIDE;
 
-  virtual std::string GetMimeType(const std::string&) const;
+  virtual std::string GetMimeType(const std::string&) const OVERRIDE;
 
-  virtual bool ShouldReplaceExistingSource() const;
+  virtual bool ShouldReplaceExistingSource() const OVERRIDE;
 
  private:
   // Called when favicon data is available from the history backend.