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

chrome/browser/banners/app_banner_manager_desktop.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_MANAGER_DESKTOP_H_
 #define CHROME_BROWSER_BANNERS_APP_BANNER_MANAGER_DESKTOP_H_
 
 #include "chrome/browser/banners/app_banner_manager.h"
 
 #include "content/public/browser/web_contents_user_data.h"
 
 namespace banners {
 
 class AppBannerManagerDesktop
     : public AppBannerManager,
       public content::WebContentsUserData<AppBannerManagerDesktop> {
 
  public:
   static bool IsEnabled();
 
  protected:
   AppBannerDataFetcher* CreateAppBannerDataFetcher(
-      base::WeakPtr<AppBannerDataFetcher::Delegate> weak_delegate,
-      const int ideal_icon_size) override;
+      base::WeakPtr<AppBannerDataFetcher::Delegate> weak_delegate) override;
 
  private:
   explicit AppBannerManagerDesktop(content::WebContents* web_contents);
   friend class content::WebContentsUserData<AppBannerManagerDesktop>;
 
   DISALLOW_COPY_AND_ASSIGN(AppBannerManagerDesktop);
 };
 
 }  // namespace banners
 
 #endif  // CHROME_BROWSER_BANNERS_APP_BANNER_MANAGER_DESKTOP_H_