webapps: allow callers of icon downloader/selector to specify a minimum size

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 39 matching lines @@
   };
 
   // Returns the current time.
   static base::Time GetCurrentTime();
 
   // 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_in_dp);
+                       int ideal_icon_size_in_dp,
+                       int minimum_icon_size_in_dp);
 
   // Begins creating a banner for the URL being displayed by the Delegate's
   // WebContents.
   void Start(const GURL& validated_url, ui::PageTransition transition_type);
 
   // Stops the pipeline when any asynchronous calls return.
   void Cancel();
 
   // Replaces the WebContents that is being observed.
   void ReplaceWebContents(content::WebContents* web_contents);
@@ skipping 91 matching lines @@
 
   // 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 base::WeakPtr<Delegate> weak_delegate_;
   const int ideal_icon_size_in_dp_;
-  const base::WeakPtr<Delegate> weak_delegate_;
+  const int minimum_icon_size_in_dp_;
   base::ObserverList<Observer> observer_list_;
   bool is_active_;
   bool was_canceled_by_page_;
   bool page_requested_prompt_;
   ui::PageTransition transition_type_;
   int event_request_id_;
   scoped_ptr<SkBitmap> app_icon_;
   std::string referrer_;
 
   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_