Make JSONParser a pure interface.

chrome/browser/extensions/webstore_data_fetcher.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/webstore_data_fetcher.h"
 
 #include "base/bind.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/webstore_data_fetcher_delegate.h"
 #include "components/safe_json/safe_json_parser.h"
@@ skipping 64 matching lines @@
 
   if (!fetcher->GetStatus().is_success() ||
       fetcher->GetResponseCode() != 200) {
     delegate_->OnWebstoreRequestFailure();
     return;
   }
 
   std::string webstore_json_data;
   fetcher->GetResponseAsString(&webstore_json_data);
 
-  scoped_refptr<safe_json::SafeJsonParser> parser =
-      new safe_json::SafeJsonParser(
-          webstore_json_data,
-          base::Bind(&WebstoreDataFetcher::OnJsonParseSuccess, AsWeakPtr()),
-          base::Bind(&WebstoreDataFetcher::OnJsonParseFailure, AsWeakPtr()));
   // The parser will call us back via one of the callbacks.
-  parser->Start();
+  safe_json::SafeJsonParser::Parse(
+      webstore_json_data,
+      base::Bind(&WebstoreDataFetcher::OnJsonParseSuccess, AsWeakPtr()),
+      base::Bind(&WebstoreDataFetcher::OnJsonParseFailure, AsWeakPtr()));
 }
 
 }  // namespace extensions