Make invalidations work for Chrome OS Kiosk Apps.

chrome/browser/invalidation/invalidation_service.h

Index: chrome/browser/invalidation/invalidation_service.h
diff --git a/chrome/browser/invalidation/invalidation_service.h b/chrome/browser/invalidation/invalidation_service.h
index 5683c935ebca7d58481436e377586f1b946add31..ed026c30d53e02a2e8df5f5271b61a50fd676e93 100644
--- a/chrome/browser/invalidation/invalidation_service.h
+++ b/chrome/browser/invalidation/invalidation_service.h
@@ -15,6 +15,7 @@ class InvalidationHandler;
 }  // namespace syncer
 
 namespace invalidation {
+class InvalidationAuthProvider;
 class InvalidationLogger;
 
 // Interface for classes that handle invalidation registrations and send out
@@ -108,6 +109,9 @@ class InvalidationService : public KeyedService {
   virtual void RequestDetailedStatus(
       base::Callback<void(const base::DictionaryValue&)> post_caller) = 0;
 
+  // Returns the authentication provider.
+  virtual InvalidationAuthProvider* GetInvalidationAuthProvider() = 0;
+
  protected:
   virtual ~InvalidationService() { }
 };