Enrollment recovery: Fix check for presence of machine id.

chrome/browser/chromeos/policy/device_cloud_policy_initializer.cc

Index: chrome/browser/chromeos/policy/device_cloud_policy_initializer.cc
diff --git a/chrome/browser/chromeos/policy/device_cloud_policy_initializer.cc b/chrome/browser/chromeos/policy/device_cloud_policy_initializer.cc
index 7e61b992ad3923249877c91fd4b4344a1fb8fb05..2839ad1e63cbf4110c72c594422b65ed2cdd294c 100644
--- a/chrome/browser/chromeos/policy/device_cloud_policy_initializer.cc
+++ b/chrome/browser/chromeos/policy/device_cloud_policy_initializer.cc
@@ -133,12 +133,7 @@ bool DeviceCloudPolicyInitializer::ShouldRecoverEnrollment() const {
   if (install_attributes_->IsEnterpriseDevice() &&
       chromeos::StartupUtils::IsEnrollmentRecoveryRequired()) {
     LOG(WARNING) << "Enrollment recovery required according to pref.";
-    std::string machine_id;
-    bool machine_id_success =
-        chromeos::system::StatisticsProvider::GetInstance()
-            ->GetMachineStatistic(chromeos::system::kHardwareClassKey,
-                                  &machine_id);
-    if (machine_id_success && machine_id != "")
+    if (!DeviceCloudPolicyManagerChromeOS::GetMachineID().empty())
       return true;
     LOG(WARNING) << "Postponing recovery because machine id is missing.";
   }