Fix policy invalidator lifecycle bugs for Android.

chrome/browser/policy/cloud/cloud_policy_refresh_scheduler.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_POLICY_CLOUD_CLOUD_POLICY_REFRESH_SCHEDULER_H_
 #define CHROME_BROWSER_POLICY_CLOUD_CLOUD_POLICY_REFRESH_SCHEDULER_H_
 
 #include "base/basictypes.h"
 #include "base/cancelable_callback.h"
 #include "base/memory/ref_counted.h"
@@ skipping 44 matching lines @@
   // and the request may not be immediately sent.
   void RefreshSoon();
 
   // The refresh scheduler starts by assuming that invalidations are not
   // available. This call can be used to signal whether the invalidations
   // service is available or not, and can be called multiple times.
   // When the invalidations service is available then the refresh rate is much
   // lower.
   void SetInvalidationServiceAvailability(bool is_available);
 
+  // Whether the invalidations service is available and receiving notifications
+  // of policy updates.
+  bool invalidations_available() {
+    return invalidations_available_;
+  }
+
   // CloudPolicyClient::Observer:
   virtual void OnPolicyFetched(CloudPolicyClient* client) OVERRIDE;
   virtual void OnRegistrationStateChanged(CloudPolicyClient* client) OVERRIDE;
   virtual void OnClientError(CloudPolicyClient* client) OVERRIDE;
 
   // CloudPolicyStore::Observer:
   virtual void OnStoreLoaded(CloudPolicyStore* store) OVERRIDE;
   virtual void OnStoreError(CloudPolicyStore* store) OVERRIDE;
 
   // net::NetworkChangeNotifier::IPAddressObserver:
@@ skipping 65 matching lines @@
   // Used to measure how long it took for the invalidations service to report
   // its initial status.
   base::Time creation_time_;
 
   DISALLOW_COPY_AND_ASSIGN(CloudPolicyRefreshScheduler);
 };
 
 }  // namespace policy
 
 #endif  // CHROME_BROWSER_POLICY_CLOUD_CLOUD_POLICY_REFRESH_SCHEDULER_H_