Enable building with configuration_policy==1 on ios.

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

Index: components/policy/core/common/cloud/cloud_policy_refresh_scheduler.cc
diff --git a/components/policy/core/common/cloud/cloud_policy_refresh_scheduler.cc b/components/policy/core/common/cloud/cloud_policy_refresh_scheduler.cc
index f80c24c2fe93c5264edd79a57121c87b80a3333d..c8d4109d579a5f403c0bdc58b24d8205b926b7b7 100644
--- a/components/policy/core/common/cloud/cloud_policy_refresh_scheduler.cc
+++ b/components/policy/core/common/cloud/cloud_policy_refresh_scheduler.cc
@@ -30,7 +30,7 @@ const int kWaitForInvalidationsTimeoutSeconds = 5;
 
 }  // namespace
 
-#if defined(OS_ANDROID)
+#if defined(OS_ANDROID) || defined(OS_IOS)
 
 const int64 CloudPolicyRefreshScheduler::kDefaultRefreshDelayMs =
     24 * 60 * 60 * 1000;  // 1 day.
@@ -214,8 +214,8 @@ void CloudPolicyRefreshScheduler::UpdateLastRefreshFromPolicy() {
     return;
   }
 
-#if defined(OS_ANDROID)
-  // Refreshing on Android:
+#if defined(OS_ANDROID) || defined(OS_IOS)
+  // Refreshing on mobile platforms:
   // - if no user is signed-in then the |client_| is never registered and
   //   nothing happens here.
   // - if the user is signed-in but isn't enterprise then the |client_| is