Standardize usage of virtual/override/final in components/

components/dom_distiller/content/dom_distiller_viewer_source.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/dom_distiller/content/dom_distiller_viewer_source.h"
 
 #include <sstream>
 #include <string>
 #include <vector>
 
@@ skipping 26 matching lines @@
     : public ViewRequestDelegate,
       public content::WebContentsObserver,
       public DistilledPagePrefs::Observer {
  public:
   explicit RequestViewerHandle(
       content::WebContents* web_contents,
       const std::string& expected_scheme,
       const std::string& expected_request_path,
       const content::URLDataSource::GotDataCallback& callback,
       DistilledPagePrefs* distilled_page_prefs);
-  virtual ~RequestViewerHandle();
+  ~RequestViewerHandle() override;
 
   // ViewRequestDelegate implementation:
-  virtual void OnArticleReady(
-      const DistilledArticleProto* article_proto) override;
+  void OnArticleReady(const DistilledArticleProto* article_proto) override;
 
-  virtual void OnArticleUpdated(
-      ArticleDistillationUpdate article_update) override;
+  void OnArticleUpdated(ArticleDistillationUpdate article_update) override;
 
   void TakeViewerHandle(scoped_ptr<ViewerHandle> viewer_handle);
 
   // content::WebContentsObserver implementation:
-  virtual void DidNavigateMainFrame(
+  void DidNavigateMainFrame(
       const content::LoadCommittedDetails& details,
       const content::FrameNavigateParams& params) override;
-  virtual void RenderProcessGone(base::TerminationStatus status) override;
-  virtual void WebContentsDestroyed() override;
-  virtual void DidFinishLoad(content::RenderFrameHost* render_frame_host,
-                             const GURL& validated_url) override;
+  void RenderProcessGone(base::TerminationStatus status) override;
+  void WebContentsDestroyed() override;
+  void DidFinishLoad(content::RenderFrameHost* render_frame_host,
+                     const GURL& validated_url) override;
 
  private:
   // Sends JavaScript to the attached Viewer, buffering data if the viewer isn't
   // ready.
   void SendJavaScript(const std::string& buffer);
 
   // Cancels the current view request. Once called, no updates will be
   // propagated to the view, and the request to DomDistillerService will be
   // cancelled.
   void Cancel();
 
   // DistilledPagePrefs::Observer implementation:
-  virtual void OnChangeFontFamily(
+  void OnChangeFontFamily(
       DistilledPagePrefs::FontFamily new_font_family) override;
-  virtual void OnChangeTheme(DistilledPagePrefs::Theme new_theme) override;
+  void OnChangeTheme(DistilledPagePrefs::Theme new_theme) override;
 
   // The handle to the view request towards the DomDistillerService. It
   // needs to be kept around to ensure the distillation request finishes.
   scoped_ptr<ViewerHandle> viewer_handle_;
 
   // The scheme hosting the current view request;
   std::string expected_scheme_;
 
   // The query path for the current view request.
   std::string expected_request_path_;
@@ skipping 255 matching lines @@
     const net::URLRequest* request,
     std::string* path) const {
 }
 
 std::string DomDistillerViewerSource::GetContentSecurityPolicyObjectSrc()
     const {
   return "object-src 'none'; style-src 'self' https://fonts.googleapis.com;";
 }
 
 }  // namespace dom_distiller