Add "open as window" menu item to NTP app menu.

chrome/browser/extensions/extensions_service.h

Index: chrome/browser/extensions/extensions_service.h
diff --git a/chrome/browser/extensions/extensions_service.h b/chrome/browser/extensions/extensions_service.h
index f137a9233c9f9a82f1efcb03042aa1fe08abb0c3..e37b452cd84f7e35c1b4b53723f81be0af8ae50e 100644
--- a/chrome/browser/extensions/extensions_service.h
+++ b/chrome/browser/extensions/extensions_service.h
@@ -386,6 +386,7 @@ class ExtensionsService
   ExtensionPrefs* extension_prefs() { return extension_prefs_.get(); }
 
   // Whether the extension service is ready.
+  // TODO(skerner): Get rid of this method.  crbug.com/63756
   bool is_ready() { return ready_; }
 
   // Note that this may return NULL if autoupdate is not turned on.
@@ -512,7 +513,8 @@ class ExtensionsService
   // Used by dispatchers to limit API quota for individual extensions.
   ExtensionsQuotaService quota_service_;
 
-  // Is the service ready to go?
+  // Record that Init() has been called, and NotificationType::EXTENSIONS_READY
+  // has fired.
   bool ready_;
 
   // Our extension updater, if updates are turned on.