Allow only responsive websites to install as a web app on mobile.

chrome/browser/banners/app_banner_data_fetcher.h

 // Copyright 2015 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.
 
 #ifndef CHROME_BROWSER_BANNERS_APP_BANNER_DATA_FETCHER_H_
 #define CHROME_BROWSER_BANNERS_APP_BANNER_DATA_FETCHER_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 44 matching lines @@
 
   // Fast-forwards the current time for testing.
   static void SetTimeDeltaForTesting(int days);
 
   AppBannerDataFetcher(content::WebContents* web_contents,
                        base::WeakPtr<Delegate> weak_delegate,
                        int ideal_icon_size);
 
   // Begins creating a banner for the URL being displayed by the Delegate's
   // WebContents.
-  void Start(const GURL& validated_url);
+  virtual void Start(const GURL& validated_url);
 
   // Stops the pipeline when any asynchronous calls return.
   void Cancel();
 
   // Replaces the WebContents that is being observed.
   void ReplaceWebContents(content::WebContents* web_contents);
 
   // Adds an observer to the list.
   void AddObserverForTesting(Observer* observer);
 
   // Removes an observer from the list.
   void RemoveObserverForTesting(Observer* observer);
 
   // Returns whether or not the pipeline has been stopped.
   bool is_active() { return is_active_; }
 
+  // Returns whether or not the requesting site is responsive. Used only on
+  // mobile.
+  bool is_responsive() { return is_responsive_; }
+
   // Returns the URL that kicked off the banner data retrieval.
   const GURL& validated_url() { return validated_url_; }
 
   // WebContentsObserver overrides.
   void WebContentsDestroyed() override;
   void DidNavigateMainFrame(
       const content::LoadCommittedDetails& details,
       const content::FrameNavigateParams& params) override;
   bool OnMessageReceived(const IPC::Message& message,
                          content::RenderFrameHost* render_frame_host) override;
@@ skipping 23 matching lines @@
   bool FetchIcon(const GURL& image_url);
 
   // Creates a banner for the app using the given |icon|.
   virtual infobars::InfoBar* CreateBanner(const SkBitmap* icon,
                                           const base::string16& title);
 
   // Records that a banner was shown. The |event_name| corresponds to the RAPPOR
   // metric being recorded.
   void RecordDidShowBanner(const std::string& event_name);
 
+  // Returns whether the fetcher is active and web contents have not been
+  // closed.
+  bool CheckFetcherIsStillAlive(content::WebContents* web_contents);
+
+  bool is_active_;
+  bool is_responsive_;
+  GURL validated_url_;
+
  private:
   // Callbacks for data retrieval.
   void OnDidGetManifest(const content::Manifest& manifest);
   void OnDidCheckHasServiceWorker(bool has_service_worker);
   void OnFetchComplete(const GURL& url, const SkBitmap* icon) override;
 
   // Shows a banner for the app, if the given |icon| is valid.
   virtual void ShowBanner(const SkBitmap* icon);
 
   // Record that the banner could be shown at this point, if the triggering
   // heuristic allowed.
   void RecordCouldShowBanner();
 
   // Returns whether the banner should be shown.
   bool CheckIfShouldShowBanner();
 
-  // Returns whether the fetcher is active and web contents have not been
-  // closed.
-  bool CheckFetcherIsStillAlive(content::WebContents* web_contents);
-
   // Returns whether the given Manifest is following the requirements to show
   // a web app banner.
   static bool IsManifestValidForWebApp(const content::Manifest& manifest,
                                        content::WebContents* web_contents);
 
   const int ideal_icon_size_;
   const base::WeakPtr<Delegate> weak_delegate_;
   ObserverList<Observer> observer_list_;
-  bool is_active_;
   int event_request_id_;
   scoped_ptr<chrome::BitmapFetcher> bitmap_fetcher_;
   scoped_ptr<SkBitmap> app_icon_;
 
-  GURL validated_url_;
   base::string16 app_title_;
   content::Manifest web_app_data_;
 
   friend class AppBannerDataFetcherUnitTest;
   friend class base::RefCounted<AppBannerDataFetcher>;
   DISALLOW_COPY_AND_ASSIGN(AppBannerDataFetcher);
 };
 
 }  // namespace banners
 
 #endif  // CHROME_BROWSER_BANNERS_APP_BANNER_DATA_FETCHER_H_