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

chrome/browser/android/webapps/add_to_homescreen_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_ANDROID_WEBAPPS_ADD_TO_HOMESCREEN_DATA_FETCHER_H_
 #define CHROME_BROWSER_ANDROID_WEBAPPS_ADD_TO_HOMESCREEN_DATA_FETCHER_H_
 
 #include "base/basictypes.h"
 #include "base/task/cancelable_task_tracker.h"
 #include "base/timer/timer.h"
@@ skipping 36 matching lines @@
     // Called when all the data needed to create a shortcut is available.
     virtual void OnDataAvailable(const ShortcutInfo& info,
                                  const SkBitmap& icon) = 0;
   };
 
   // Initialize the fetcher by requesting the information about the page to the
   // renderer process. The initialization is asynchronous and
   // OnDidGetWebApplicationInfo is expected to be called when finished.
   AddToHomescreenDataFetcher(content::WebContents* web_contents,
                              int ideal_splash_image_size_in_dp,
+                             int minimum_splash_image_size_in_dp,
                              int ideal_icon_size_in_dp,
+                             int minimum_icon_size_in_dp,
                              Observer* observer);
 
   // Called to fetch the splash screen image to be stored for the webapp with
   // the specified |id|.
   void FetchSplashScreenImage(const std::string& id);
 
   // IPC message received when the initialization is finished.
   void OnDidGetWebApplicationInfo(const WebApplicationInfo& web_app_info);
 
   // Called when the Manifest has been parsed, or if no Manifest was found.
@@ skipping 34 matching lines @@
   bool is_ready_;
   base::Timer icon_timeout_timer_;
   ShortcutInfo shortcut_info_;
   GURL splash_screen_url_;
 
   // The icon must only be set on the UI thread for thread safety.
   SkBitmap shortcut_icon_;
   base::CancelableTaskTracker favicon_task_tracker_;
 
   const int ideal_splash_image_size_in_dp_;
+  const int minimum_splash_image_size_in_dp_;
   const int ideal_icon_size_in_dp_;
+  const int minimum_icon_size_in_dp_;
 
   friend class base::RefCounted<AddToHomescreenDataFetcher>;
   DISALLOW_COPY_AND_ASSIGN(AddToHomescreenDataFetcher);
 };
 
 #endif  // CHROME_BROWSER_ANDROID_WEBAPPS_ADD_TO_HOMESCREEN_DATA_FETCHER_H_