Re-land r93365 - add RefCountedString

chrome/browser/ui/webui/workers_ui.cc

Index: chrome/browser/ui/webui/workers_ui.cc
diff --git a/chrome/browser/ui/webui/workers_ui.cc b/chrome/browser/ui/webui/workers_ui.cc
index 52cd620182d0ad7a4a4341bc4ef2071d52d0932c..f2220a31d8fd20ee41446f5fa1cd5d53293a0f9d 100644
--- a/chrome/browser/ui/webui/workers_ui.cc
+++ b/chrome/browser/ui/webui/workers_ui.cc
@@ -101,11 +101,7 @@ void WorkersUIHTMLSource::SendSharedWorkersData(int request_id) {
     std::string json_string;
     base::JSONWriter::Write(&workers_list, false, &json_string);
 
-    scoped_refptr<RefCountedBytes> json_bytes(new RefCountedBytes());
-    json_bytes->data.resize(json_string.size());
-    std::copy(json_string.begin(), json_string.end(), json_bytes->data.begin());
-
-    SendResponse(request_id, json_bytes);
+    SendResponse(request_id, base::RefCountedString::TakeString(&json_string));
 }
 
 class WorkersDOMHandler : public WebUIMessageHandler {