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

chrome/browser/prefs/browser_prefs.cc

Index: chrome/browser/prefs/browser_prefs.cc
diff --git a/chrome/browser/prefs/browser_prefs.cc b/chrome/browser/prefs/browser_prefs.cc
index 1cf05832dd7d8f0ab00f1df073182d5fad97eeea..3313ea6c128b41efc721594882f7df4ef85625c1 100644
--- a/chrome/browser/prefs/browser_prefs.cc
+++ b/chrome/browser/prefs/browser_prefs.cc
@@ -18,6 +18,7 @@
 #include "chrome/browser/download/download_prefs.h"
 #include "chrome/browser/extensions/api/commands/command_service.h"
 #include "chrome/browser/extensions/api/tabs/tabs_api.h"
+#include "chrome/browser/extensions/app_launcher.h"
 #include "chrome/browser/extensions/component_loader.h"
 #include "chrome/browser/extensions/extension_prefs.h"
 #include "chrome/browser/extensions/extension_web_ui.h"
@@ -152,6 +153,7 @@ void RegisterLocalState(PrefServiceSimple* local_state) {
   // Please keep this list alphabetized.
   browser_shutdown::RegisterPrefs(local_state);
   chrome::RegisterScreenshotPrefs(local_state);
+  extensions::app_launcher::RegisterPrefs(local_state);
   ExternalProtocolHandler::RegisterPrefs(local_state);
   FlagsUI::RegisterPrefs(local_state);
   geolocation::RegisterPrefs(local_state);