Re-land r93365 - add RefCountedString

chrome/browser/ui/webui/media/media_internals_ui.cc

Index: chrome/browser/ui/webui/media/media_internals_ui.cc
diff --git a/chrome/browser/ui/webui/media/media_internals_ui.cc b/chrome/browser/ui/webui/media/media_internals_ui.cc
index 6fc022914c320cac499da9edc375dd031e18ccd5..b794ff942f5e5f2d8b52d160e4d56e4dd1ee55a2 100644
--- a/chrome/browser/ui/webui/media/media_internals_ui.cc
+++ b/chrome/browser/ui/webui/media/media_internals_ui.cc
@@ -57,11 +57,7 @@ void MediaInternalsHTMLSource::StartDataRequest(const std::string& path,
   jstemplate_builder::AppendJsonHtml(&localized_strings, &html);
   jstemplate_builder::AppendI18nTemplateProcessHtml(&html);
 
-  scoped_refptr<RefCountedBytes> bytes(new RefCountedBytes());
-  bytes->data.resize(html.size());
-  std::copy(html.begin(), html.end(), bytes->data.begin());
-
-  SendResponse(request_id, bytes);
+  SendResponse(request_id, base::RefCountedString::TakeString(&html));
 }
 
 std::string MediaInternalsHTMLSource::GetMimeType(