Convert //chrome/browser/chromeos from scoped_ptr to std::unique_ptr

chrome/browser/chromeos/policy/user_cloud_policy_token_forwarder.h

Index: chrome/browser/chromeos/policy/user_cloud_policy_token_forwarder.h
diff --git a/chrome/browser/chromeos/policy/user_cloud_policy_token_forwarder.h b/chrome/browser/chromeos/policy/user_cloud_policy_token_forwarder.h
index c3a75d50cff7869ace38da1318448294e6ada21a..6415814e5377295278626c8ca497013106b1218c 100644
--- a/chrome/browser/chromeos/policy/user_cloud_policy_token_forwarder.h
+++ b/chrome/browser/chromeos/policy/user_cloud_policy_token_forwarder.h
@@ -59,7 +59,7 @@ class UserCloudPolicyTokenForwarder : public KeyedService,
   UserCloudPolicyManagerChromeOS* manager_;
   ProfileOAuth2TokenService* token_service_;
   SigninManagerBase* signin_manager_;
-  scoped_ptr<OAuth2TokenService::Request> request_;
+  std::unique_ptr<OAuth2TokenService::Request> request_;
 
   DISALLOW_COPY_AND_ASSIGN(UserCloudPolicyTokenForwarder);
 };