Re-land r93365 - add RefCountedString

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

Index: chrome/browser/ui/webui/chromeos/mobile_setup_ui.cc
diff --git a/chrome/browser/ui/webui/chromeos/mobile_setup_ui.cc b/chrome/browser/ui/webui/chromeos/mobile_setup_ui.cc
index 79946d7c30b4be366162288f497c4075e089a7db..30b8bef3098e54a576a87ddbcd35b97a905a82d4 100644
--- a/chrome/browser/ui/webui/chromeos/mobile_setup_ui.cc
+++ b/chrome/browser/ui/webui/chromeos/mobile_setup_ui.cc
@@ -430,14 +430,10 @@ void MobileSetupUIHTMLSource::StartDataRequest(const std::string& path,
       ResourceBundle::GetSharedInstance().GetRawDataResource(
           IDR_MOBILE_SETUP_PAGE_HTML));
 
-  const std::string full_html = jstemplate_builder::GetI18nTemplateHtml(
-      html, &strings);
+  std::string full_html = jstemplate_builder::GetI18nTemplateHtml(html,
+                                                                  &strings);
 
-  scoped_refptr<RefCountedBytes> html_bytes(new RefCountedBytes);
-  html_bytes->data.resize(full_html.size());
-  std::copy(full_html.begin(), full_html.end(), html_bytes->data.begin());
-
-  SendResponse(request_id, html_bytes);
+  SendResponse(request_id, base::RefCountedString::TakeString(&full_html));
 }
 
 ////////////////////////////////////////////////////////////////////////////////