Add enable-app-shims to chrome://flags.

chrome/browser/resources/ntp4/page_list_view.js

 // Copyright (c) 2012 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.
 
 /**
  * @fileoverview PageListView implementation.
  * PageListView manages page list, dot list, switcher buttons and handles apps
  * pages callbacks from backend.
  *
  * Note that you need to have AppLauncherHandler in your WebUI to use this code.
@@ skipping 395 matching lines @@
 
       // Tell the slider about the pages and mark the current page.
       this.updateSliderCards();
       this.cardSlider.currentCardValue.navigationDot.classList.add('selected');
 
       if (!this.appsLoaded_) {
         this.appsLoaded_ = true;
         cr.dispatchSimpleEvent(document, 'sectionready', true, true);
       }
       this.updateAppLauncherPromoHiddenState_();
+
+      if (data.disableCreateAppShortcut === true) {

[tapted, 2013/05/30 05:32:24]

maybe this check should be before `sectionready` is dispatched?

+        this.appsPages[0].disableCreateAppShortcut();

[tapted, 2013/05/30 05:32:24]

this reads strangely -- it's only setting page[0], which is "wrong" (except that
it's currently a `static` variable, or it's on a singleton. Maybe call
AppContextMenu.getInstance() here (perhaps indirectly), and use that setter
function you'll add.

+      }
     },
 
     /**
      * Called by chrome when a new app has been added to chrome or has been
      * enabled if previously disabled.
      * @param {Object} appData A data structure full of relevant information for
      *     the app.
      * @param {boolean=} opt_highlight Whether the app about to be added should
      *     be highlighted.
      */
@@ skipping 377 matching lines @@
       if (page.navigationDot)
         page.navigationDot.remove(opt_animate);
       this.cardSlider.removeCard(page);
     },
   };
 
   return {
     PageListView: PageListView
   };
 });