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

chrome/browser/resources/ntp4/page_list_view.js

Index: chrome/browser/resources/ntp4/page_list_view.js
diff --git a/chrome/browser/resources/ntp4/page_list_view.js b/chrome/browser/resources/ntp4/page_list_view.js
index b95825c1ac079992a34be966e93b31e0df261c3a..ca1e9d54b4385532bb75c58a03675f9f6412c510 100644
--- a/chrome/browser/resources/ntp4/page_list_view.js
+++ b/chrome/browser/resources/ntp4/page_list_view.js
@@ -413,6 +413,10 @@ cr.define('ntp', function() {
         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.

+      }
     },
 
     /**