Pass the previous and the current PolicyMap to Observers of the PolicyService.

chrome/browser/policy/configuration_policy_pref_store.cc

 // 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.
 
 #include "chrome/browser/policy/configuration_policy_pref_store.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 65 matching lines @@
   if (!prefs_.get() || !prefs_->GetValue(key, &stored_value))
     return PrefStore::READ_NO_VALUE;
 
   if (value)
     *value = stored_value;
   return PrefStore::READ_OK;
 }
 
 void ConfigurationPolicyPrefStore::OnPolicyUpdated(
     PolicyDomain domain,
-    const std::string& component_id) {
+    const std::string& component_id,
+    const PolicyMap& previous,
+    const PolicyMap& current) {
   DCHECK_EQ(POLICY_DOMAIN_CHROME, domain);
   DCHECK_EQ("", component_id);
   Refresh();
 }
 
 void ConfigurationPolicyPrefStore::OnPolicyServiceInitialized() {
   FOR_EACH_OBSERVER(PrefStore::Observer, observers_,
                     OnInitializationCompleted(true));
 }
 
@@ skipping 48 matching lines @@
   // issue during startup.
   BrowserThread::PostTask(BrowserThread::UI,
                           FROM_HERE,
                           base::Bind(&LogErrors,
                                      base::Owned(errors.release())));
 
   return prefs.release();
 }
 
 }  // namespace policy