Don't show the apps page on the NTP if the app launcher is installed.

chrome/common/pref_names.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/common/pref_names.h"
 
 #include "base/basictypes.h"
 
 namespace prefs {
 
@@ skipping 1619 matching lines @@
 
 // The "hide this" link text for the NTP web store promo.
 const char kNtpWebStorePromoExpire[] = "ntp.webstorepromo.expire";
 
 // Specifies what users should maximize the NTP web store promo.
 const char kNtpWebStorePromoUserGroup[] = "ntp.webstorepromo.usergroup";
 
 // Customized app page names that appear on the New Tab Page.
 const char kNtpAppPageNames[] = "ntp.app_page_names";
 
+// Whether to show the apps page on the NTP.
+const char kNtpShouldShowAppsPage[] = "ntp.should_show_apps_page";
+
 const char kDevToolsDisabled[] = "devtools.disabled";
 
 // A string specifying the dock location (either 'bottom' or 'right').
 const char kDevToolsDockSide[] = "devtools.dock_side";
 
 // Maps of files edited locally using DevTools.
 const char kDevToolsEditedFiles[] = "devtools.edited_files";
 
 // List of file system paths added in DevTools.
 const char kDevToolsFileSystemPaths[] = "devtools.file_system_paths";
@@ skipping 579 matching lines @@
 const char kLastPolicyStatisticsUpdate[] = "policy.last_statistics_update";
 
 #if defined(OS_CHROMEOS)
 // The RLZ brand code, if enabled.
 const char kRLZBrand[] = "rlz.brand";
 // Whether RLZ pings are disabled.
 const char kRLZDisabled[] = "rlz.disabled";
 #endif
 
 }  // namespace prefs