ntp: remove ShownSectionHandler and all references to it

chrome/browser/extensions/apps_promo.h

 // Copyright (c) 2011 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_EXTENSIONS_APPS_PROMO_H_
 #define CHROME_BROWSER_EXTENSIONS_APPS_PROMO_H_
 #pragma once
 
 #include <set>
 #include <string>
@@ skipping 82 matching lines @@
   }
 
   // Halts the special treatment of the default apps. The default apps may be
   // removed by the caller after calling this method. If the apps remain
   // installed, AppsPromo will no longer consider the apps "default".
   void ExpireDefaultApps();
 
   // Called to hide the promo from the apps section.
   void HidePromo();
 
-  // Maximizes the apps section on the NTP if the following conditions are met:
-  //  (a) the existing promo has not already been maximized
-  //  (b) the current user group is targetted by the promo
-  void MaximizeAppsIfNecessary();
-
   // Returns true if the app launcher should be displayed on the NTP.
   bool ShouldShowAppLauncher(const ExtensionIdSet& installed_ids);
 
   // Returns true if the apps promo should be displayed in the launcher.
   bool ShouldShowPromo(const ExtensionIdSet& installed_ids,
                        bool* just_expired);
 
  private:
   FRIEND_TEST_ALL_PREFIXES(ExtensionAppsPromo, HappyPath);
   FRIEND_TEST_ALL_PREFIXES(ExtensionAppsPromo, PromoPrefs);
@@ skipping 51 matching lines @@
 
   // Checks if the promo logo matches https://*.google.com/*.png.
   bool SupportsLogoURL();
 
   Profile* profile_;
   AppsPromo::PromoData promo_data_;
   scoped_ptr<content::URLFetcher> url_fetcher_;
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_APPS_PROMO_H_