Simplify the user agent code some more since after r255534 it's not affected by the site's URL.

chrome/browser/policy/cloud/user_policy_signin_service_base.cc

Index: chrome/browser/policy/cloud/user_policy_signin_service_base.cc
===================================================================
--- chrome/browser/policy/cloud/user_policy_signin_service_base.cc	(revision 255867)
+++ chrome/browser/policy/cloud/user_policy_signin_service_base.cc	(working copy)
@@ -11,6 +11,7 @@
 #include "chrome/browser/policy/cloud/user_cloud_policy_manager_factory.h"
 #include "chrome/browser/signin/signin_manager.h"
 #include "chrome/browser/signin/signin_manager_factory.h"
+#include "chrome/common/chrome_content_client.h"
 #include "chrome/common/chrome_switches.h"
 #include "components/policy/core/browser/browser_policy_connector.h"
 #include "components/policy/core/common/cloud/device_management_service.h"
@@ -18,7 +19,6 @@
 #include "components/policy/core/common/cloud/user_cloud_policy_manager.h"
 #include "components/policy/core/common/cloud/user_policy_request_context.h"
 #include "content/public/browser/notification_source.h"
-#include "content/public/common/content_client.h"
 #include "net/url_request/url_request_context_getter.h"
 
 namespace policy {
@@ -252,17 +252,14 @@
 scoped_refptr<net::URLRequestContextGetter>
 UserPolicySigninServiceBase::CreateSystemRequestContext() {
   return new SystemPolicyRequestContext(
-      system_request_context(),
-      content::GetUserAgent(GURL(device_management_service_->GetServerUrl())));
+      system_request_context(), GetUserAgent());
 }
 
 scoped_refptr<net::URLRequestContextGetter>
 UserPolicySigninServiceBase::CreateUserRequestContext(
     scoped_refptr<net::URLRequestContextGetter> profile_request_context) {
   return new UserPolicyRequestContext(
-      profile_request_context,
-      system_request_context(),
-      content::GetUserAgent(GURL(device_management_service_->GetServerUrl())));
+      profile_request_context, system_request_context(), GetUserAgent());
 }
 
 }  // namespace policy