Remove PrefObserver usage, batch 9.

chrome/browser/policy/cloud_policy_refresh_scheduler.h

Index: chrome/browser/policy/cloud_policy_refresh_scheduler.h
diff --git a/chrome/browser/policy/cloud_policy_refresh_scheduler.h b/chrome/browser/policy/cloud_policy_refresh_scheduler.h
index aaba6c1a137e3e3f5d47545be31534de914ff892..e2ecb6edc9659fc37eea582e93fa5976c16a104c 100644
--- a/chrome/browser/policy/cloud_policy_refresh_scheduler.h
+++ b/chrome/browser/policy/cloud_policy_refresh_scheduler.h
@@ -10,7 +10,6 @@
 #include "base/basictypes.h"
 #include "base/cancelable_callback.h"
 #include "base/memory/ref_counted.h"
-#include "base/prefs/public/pref_observer.h"
 #include "base/time.h"
 #include "chrome/browser/api/prefs/pref_member.h"
 #include "chrome/browser/policy/cloud_policy_client.h"
@@ -30,7 +29,6 @@ namespace policy {
 class CloudPolicyRefreshScheduler
     : public CloudPolicyClient::Observer,
       public CloudPolicyStore::Observer,
-      public PrefObserver,
       public net::NetworkChangeNotifier::IPAddressObserver {
  public:
   // Refresh constants.
@@ -60,10 +58,6 @@ class CloudPolicyRefreshScheduler
   virtual void OnStoreLoaded(CloudPolicyStore* store) OVERRIDE;
   virtual void OnStoreError(CloudPolicyStore* store) OVERRIDE;
 
-  // PrefObserver:
-  virtual void OnPreferenceChanged(PrefServiceBase* service,
-                                   const std::string& pref_name) OVERRIDE;
-
   // net::NetworkChangeNotifier::IPAddressObserver:
   virtual void OnIPAddressChanged() OVERRIDE;