Added RefreshPolicies to PolicyService.

chrome/browser/ui/webui/policy_ui.h

Index: chrome/browser/ui/webui/policy_ui.h
diff --git a/chrome/browser/ui/webui/policy_ui.h b/chrome/browser/ui/webui/policy_ui.h
index 34e58877023b99bcb1db3efbc1a29473c1cf05a0..8376ae7bf70907858eb115ae8e66d0cbd3d7d191 100644
--- a/chrome/browser/ui/webui/policy_ui.h
+++ b/chrome/browser/ui/webui/policy_ui.h
@@ -7,6 +7,7 @@
 #pragma once
 
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
 #include "base/values.h"
 #include "chrome/browser/policy/cloud_policy_subsystem.h"
 #include "chrome/browser/policy/configuration_policy_reader.h"
@@ -66,6 +67,9 @@ class PolicyUIHandler : public content::WebUIMessageHandler,
 
   scoped_ptr<policy::PolicyStatus> policy_status_;
 
+  // Used to post a callback to RefreshPolicies with a WeakPtr to |this|.
+  base::WeakPtrFactory<PolicyUIHandler> weak_ptr_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(PolicyUIHandler);
 };