Remove the app launcher promo code

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

Index: chrome/browser/ui/webui/ntp/app_launcher_handler.h
diff --git a/chrome/browser/ui/webui/ntp/app_launcher_handler.h b/chrome/browser/ui/webui/ntp/app_launcher_handler.h
index f774923ee6cd7a488fad42e6e3de1096ae9e3cb7..d1988a226ff3630c2aa1cd32dc0f426ea8b5824d 100644
--- a/chrome/browser/ui/webui/ntp/app_launcher_handler.h
+++ b/chrome/browser/ui/webui/ntp/app_launcher_handler.h
@@ -9,7 +9,6 @@
 #include <set>
 #include <string>
 
-#include "apps/metrics_names.h"
 #include "base/macros.h"
 #include "base/task/cancelable_task_tracker.h"
 #include "chrome/browser/extensions/extension_uninstall_dialog.h"
@@ -131,12 +130,6 @@ class AppLauncherHandler
   // page_index].
   void HandleGenerateAppForLink(const base::ListValue* args);
 
-  // Handles "stopShowingAppLauncherPromo" message with unused |args|.
-  void HandleStopShowingAppLauncherPromo(const base::ListValue* args);
-
-  // Handles "learnMore" message with unused |args|.
-  void HandleOnLearnMore(const base::ListValue* args);
-
   // Handles "pageSelected" message with |args| containing [page_index].
   void HandlePageSelected(const base::ListValue* args);
 
@@ -177,8 +170,6 @@ class AppLauncherHandler
 
   void OnExtensionPreferenceChanged();
 
-  void OnLocalStatePreferenceChanged();
-
   // Called when an app is removed (unloaded or uninstalled). Updates the UI.
   void AppRemoved(const extensions::Extension* extension, bool is_uninstall);