Re-land r93365 - add RefCountedString

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

Index: chrome/browser/ui/webui/chromeos/sim_unlock_ui.cc
diff --git a/chrome/browser/ui/webui/chromeos/sim_unlock_ui.cc b/chrome/browser/ui/webui/chromeos/sim_unlock_ui.cc
index dfc5574d6d9e94c22b156cf58bc58286702219a3..0dfd028d0fbeb1279d7acdfc19ecaf4f728b42f5 100644
--- a/chrome/browser/ui/webui/chromeos/sim_unlock_ui.cc
+++ b/chrome/browser/ui/webui/chromeos/sim_unlock_ui.cc
@@ -295,14 +295,10 @@ void SimUnlockUIHTMLSource::StartDataRequest(const std::string& path,
       ResourceBundle::GetSharedInstance().GetRawDataResource(
           IDR_SIM_UNLOCK_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));
 }
 
 // SimUnlockHandler ------------------------------------------------------------