Update CrOS to use scoped_refptr<T>::get() rather than implicit "operator T*"

chrome/browser/chromeos/settings/session_manager_operation.cc

Index: chrome/browser/chromeos/settings/session_manager_operation.cc
diff --git a/chrome/browser/chromeos/settings/session_manager_operation.cc b/chrome/browser/chromeos/settings/session_manager_operation.cc
index 5339f3fea9b1130bfb644f42eb2c12eda4a422fa..67188e81bd1a885f825d6a818a7b6aeda18d9a44 100644
--- a/chrome/browser/chromeos/settings/session_manager_operation.cc
+++ b/chrome/browser/chromeos/settings/session_manager_operation.cc
@@ -236,7 +236,7 @@ void SignAndStoreSettingsOperation::Run() {
 }
 
 void SignAndStoreSettingsOperation::StartSigning() {
-  if (!owner_key() || !owner_key()->private_key() || username_.empty()) {
+  if (!owner_key().get() || !owner_key()->private_key() || username_.empty()) {
     ReportResult(DeviceSettingsService::STORE_KEY_UNAVAILABLE);
     return;
   }