Re-land r93365 - add RefCountedString

chrome/browser/ui/webui/chromeos/enterprise_enrollment_ui.cc

Index: chrome/browser/ui/webui/chromeos/enterprise_enrollment_ui.cc
diff --git a/chrome/browser/ui/webui/chromeos/enterprise_enrollment_ui.cc b/chrome/browser/ui/webui/chromeos/enterprise_enrollment_ui.cc
index 455fc308b5b1e23467910c34a5b96d957f8e7f16..63360fb0b857ac66f2280a640fb3652c76fa0b31 100644
--- a/chrome/browser/ui/webui/chromeos/enterprise_enrollment_ui.cc
+++ b/chrome/browser/ui/webui/chromeos/enterprise_enrollment_ui.cc
@@ -138,11 +138,7 @@ void EnterpriseEnrollmentDataSource::StartDataRequest(const std::string& path,
         jstemplate_builder::GetI18nTemplateHtml(html, localized_strings_.get());
   }
 
-  // Send the response.
-  scoped_refptr<RefCountedBytes> html_bytes(new RefCountedBytes());
-  html_bytes->data.resize(response.size());
-  std::copy(response.begin(), response.end(), html_bytes->data.begin());
-  SendResponse(request_id, html_bytes);
+  SendResponse(request_id, base::RefCountedString::TakeString(&response));
 }
 
 std::string EnterpriseEnrollmentDataSource::GetMimeType(