Use OffTheRecord profile in case of GuestLogin for AppList.

chrome/browser/profiles/profile_manager.h

Index: chrome/browser/profiles/profile_manager.h
diff --git a/chrome/browser/profiles/profile_manager.h b/chrome/browser/profiles/profile_manager.h
index 5cc609032f61d0fabbedeaa7e26d6305d2d65cd2..8c07563272ccc993b32bea72fc6055a7bdec2694 100644
--- a/chrome/browser/profiles/profile_manager.h
+++ b/chrome/browser/profiles/profile_manager.h
@@ -59,6 +59,11 @@ class ProfileManager : public base::NonThreadSafe,
   // Same as instance method but provides the default user_data_dir as well.
   static Profile* GetDefaultProfile();
 
+  // DEPRECATED: DO NOT USE unless in ChromeOS.
+  // Same as GetDefaultProfile() but returns OffTheRecord profile
+  // if guest login.
+  static Profile* GetDefaultProfileOrOffTheRecord();
+
   // Returns a profile for a specific profile directory within the user data
   // dir. This will return an existing profile it had already been created,
   // otherwise it will create and manage it.