Allow policy refresh rate to be configured through policy.

chrome/browser/prefs/browser_prefs.cc

Index: chrome/browser/prefs/browser_prefs.cc
diff --git a/chrome/browser/prefs/browser_prefs.cc b/chrome/browser/prefs/browser_prefs.cc
index 88e4b13a060937fde960df54831703e19f6ec965..e0986591a6ecd441ede5b4712bd4253ed8465e8b 100644
--- a/chrome/browser/prefs/browser_prefs.cc
+++ b/chrome/browser/prefs/browser_prefs.cc
@@ -27,17 +27,18 @@
 #include "chrome/browser/geolocation/geolocation_prefs.h"
 #include "chrome/browser/google/google_url_tracker.h"
 #include "chrome/browser/host_zoom_map.h"
-#include "chrome/browser/intranet_redirect_detector.h"
 #include "chrome/browser/instant/instant_controller.h"
+#include "chrome/browser/intranet_redirect_detector.h"
 #include "chrome/browser/metrics/metrics_log.h"
 #include "chrome/browser/metrics/metrics_service.h"
+#include "chrome/browser/net/net_pref_observer.h"
 #include "chrome/browser/net/predictor_api.h"
 #include "chrome/browser/net/pref_proxy_config_service.h"
-#include "chrome/browser/net/net_pref_observer.h"
-#include "chrome/browser/notifications/notification_ui_manager.h"
 #include "chrome/browser/notifications/desktop_notification_service.h"
+#include "chrome/browser/notifications/notification_ui_manager.h"
 #include "chrome/browser/page_info_model.h"
 #include "chrome/browser/password_manager/password_manager.h"
+#include "chrome/browser/policy/profile_policy_context.h"
 #include "chrome/browser/prefs/session_startup_pref.h"
 #include "chrome/browser/profiles/profile_impl.h"
 #include "chrome/browser/renderer_host/browser_render_process_host.h"
@@ -155,6 +156,7 @@ void RegisterUserPrefs(PrefService* user_prefs) {
   TemplateURLModel::RegisterUserPrefs(user_prefs);
   InstantController::RegisterUserPrefs(user_prefs);
   NetPrefObserver::RegisterPrefs(user_prefs);
+  policy::ProfilePolicyContext::RegisterUserPrefs(user_prefs);
 }
 
 }  // namespace browser