Moved the AppNotification system into extensions namespace

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 4f0bb6362b8d13409ee37ec30e07c1b3cad8a674..247e42feefe27873494f4a2a93bcddd8206f6c4f 100644
--- a/chrome/browser/ui/webui/ntp/app_launcher_handler.h
+++ b/chrome/browser/ui/webui/ntp/app_launcher_handler.h
@@ -20,11 +20,14 @@
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_ui_message_handler.h"
 
-class AppNotification;
 class ExtensionService;
 class PrefChangeRegistrar;
 class Profile;
 
+namespace extensions {
+class AppNotification;
+}
+
 // The handler for Javascript messages related to the "apps" view.
 class AppLauncherHandler : public content::WebUIMessageHandler,
                            public ExtensionUninstallDialog::Delegate,
@@ -37,7 +40,7 @@ class AppLauncherHandler : public content::WebUIMessageHandler,
   // Populate a dictionary with the information from an extension.
   static void CreateAppInfo(
       const extensions::Extension* extension,
-      const AppNotification* notification,
+      const extensions::AppNotification* notification,
       ExtensionService* service,
       base::DictionaryValue* value);