gdrive: Get JSON feeds parsing off the UI thread

chrome/browser/chromeos/gdata/gdata_errorcode.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_GDATA_GDATA_ERRORCODE_H_
 #define CHROME_BROWSER_CHROMEOS_GDATA_GDATA_ERRORCODE_H_
 #pragma once
 
 namespace gdata {
 
 // HTTP errors that can be returned by GData service.
 enum GDataErrorCode {
   HTTP_SUCCESS               = 200,
   HTTP_CREATED               = 201,
   HTTP_FOUND                 = 302,
   HTTP_NOT_MODIFIED          = 304,
   HTTP_RESUME_INCOMPLETE     = 308,
   HTTP_BAD_REQUEST           = 400,
   HTTP_UNAUTHORIZED          = 401,
   HTTP_FORBIDDEN             = 403,
   HTTP_NOT_FOUND             = 404,
   HTTP_CONFLICT              = 409,
   HTTP_LENGTH_REQUIRED       = 411,
   HTTP_PRECONDITION          = 412,
   HTTP_INTERNAL_SERVER_ERROR = 500,
   HTTP_SERVICE_UNAVAILABLE   = 503,
+  GDATA_NO_STATUS            = 0,

[hashimoto, 2012/07/10 03:48:39]

Do we really need to add this?
Can we use HTTP_SUCCESS instead?

[yoshiki, 2012/07/11 00:47:14]

Done.

   GDATA_PARSE_ERROR          = -100,
   GDATA_FILE_ERROR           = -101,
   GDATA_CANCELLED            = -102,
   GDATA_OTHER_ERROR          = -103,
   GDATA_NO_CONNECTION        = -104,
 };
 
 }  // namespace gdata
 
 #endif  // CHROME_BROWSER_CHROMEOS_GDATA_GDATA_ERRORCODE_H_