Preserve the app in the AppLauncherHandler if it's disabled.

chrome/browser/ui/webui/ntp/app_launcher_handler.cc

 // 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.
 
 #include "chrome/browser/ui/webui/ntp/app_launcher_handler.h"
 
 #include <vector>
 
 #include "apps/app_launcher.h"
 #include "apps/metrics_names.h"
@@ skipping 277 matching lines @@
       }
       if (!extension->is_app())
         return;
 
       PrefService* prefs = Profile::FromWebUI(web_ui())->GetPrefs();
       if (!ShouldDisplayInNewTabPage(extension, prefs))
         return;
 
       scoped_ptr<DictionaryValue> app_info(GetAppInfo(extension));
       if (app_info.get()) {
-        visible_apps_.erase(extension->id());
+        if (uninstalled)
+          visible_apps_.erase(extension->id());
 
         scoped_ptr<base::FundamentalValue> uninstall_value(
             Value::CreateBooleanValue(uninstalled));
         scoped_ptr<base::FundamentalValue> from_page(
             Value::CreateBooleanValue(!extension_id_prompting_.empty()));
         web_ui()->CallJavascriptFunction(
             "ntp.appRemoved", *app_info, *uninstall_value, *from_page);
       }
       break;
     }
@@ skipping 518 matching lines @@
 ExtensionUninstallDialog* AppLauncherHandler::GetExtensionUninstallDialog() {
   if (!extension_uninstall_dialog_.get()) {
     Browser* browser = chrome::FindBrowserWithWebContents(
         web_ui()->GetWebContents());
     extension_uninstall_dialog_.reset(
         ExtensionUninstallDialog::Create(extension_service_->profile(),
                                          browser, this));
   }
   return extension_uninstall_dialog_.get();
 }