Device policy refresh fixed when the device is woken up.

components/policy/core/common/cloud/cloud_policy_refresh_scheduler.h

Index: components/policy/core/common/cloud/cloud_policy_refresh_scheduler.h
diff --git a/components/policy/core/common/cloud/cloud_policy_refresh_scheduler.h b/components/policy/core/common/cloud/cloud_policy_refresh_scheduler.h
index f82052e1c7418b12b1682215c558d1c638db8d03..7110c94aaf76f32d30f8cea120fca6934b4dc4e2 100644
--- a/components/policy/core/common/cloud/cloud_policy_refresh_scheduler.h
+++ b/components/policy/core/common/cloud/cloud_policy_refresh_scheduler.h
@@ -83,6 +83,7 @@ class POLICY_EXPORT CloudPolicyRefreshScheduler
   void OnStoreError(CloudPolicyStore* store) override;
 
   // net::NetworkChangeNotifier::IPAddressObserver:
+  // Triggered also when the device wakes up.
   void OnIPAddressChanged() override;
 
  private:
@@ -101,12 +102,15 @@ class POLICY_EXPORT CloudPolicyRefreshScheduler
   void PerformRefresh();
 
   // Schedules a policy refresh to happen no later than |delta_ms| msecs after
-  // |last_refresh_|.
+  // |last_refresh_| or |last_refresh_ticks_| whichever is sooner.
   void RefreshAfter(int delta_ms);
 
   // Cancels the scheduled policy refresh.
   void CancelRefresh();
 
+  // Sets the |last_refresh_| and |last_refresh_ticks_| to current time.
+  void UpdateLastRefresh();
+
   CloudPolicyClient* client_;
   CloudPolicyStore* store_;
 
@@ -120,9 +124,15 @@ class POLICY_EXPORT CloudPolicyRefreshScheduler
   // |RefreshNow|).
   bool is_scheduled_for_soon_ = false;
 
-  // The last time a refresh callback completed.
+  // The last time a refresh callback completed. Is null in case the client is
+  // not registered.
   base::Time last_refresh_;
 
+  // The same |last_refresh_|, but based on TimeTicks. This allows to schedule
+  // the refresh times based on both, system time and TimeTicks, providing a
+  // protection against changes in system time.
+  base::TimeTicks last_refresh_ticks_;
+
   // Error retry delay in milliseconds.
   int64_t error_retry_delay_ms_;