Implement a DRIVE_REQUEST_TOO_LARGE backoff.

chrome/browser/sync_file_system/drive_backend/drive_backend_util.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/sync_file_system/drive_backend/drive_backend_util.h"
 
 #include "base/logging.h"
 #include "base/memory/scoped_vector.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
@@ skipping 112 matching lines @@
       return SYNC_FILE_ERROR_FAILED;
 
     case google_apis::HTTP_FORBIDDEN:
       return SYNC_STATUS_ACCESS_FORBIDDEN;
 
     case google_apis::HTTP_RESUME_INCOMPLETE:
     case google_apis::HTTP_BAD_REQUEST:
     case google_apis::HTTP_LENGTH_REQUIRED:
     case google_apis::HTTP_NOT_IMPLEMENTED:
     case google_apis::DRIVE_PARSE_ERROR:
+    case google_apis::DRIVE_RESPONSE_TOO_LARGE:
     case google_apis::DRIVE_OTHER_ERROR:
       return SYNC_STATUS_FAILED;
 
     case google_apis::DRIVE_NO_SPACE:
       return SYNC_FILE_ERROR_NO_SPACE;
   }
 
   // There's a case where DriveService layer returns DriveApiErrorCode==-1
   // when network is unavailable. (http://crbug.com/223042)
   // TODO(kinuko,nhiroki): We should identify from where this undefined error
@@ skipping 36 matching lines @@
   } else if (status.IsNotFound()) {
     service_metadata.reset(new ServiceMetadata);
     service_metadata->set_next_tracker_id(1);
   }
 
   return service_metadata.Pass();
 }
 
 }  // namespace drive_backend
 }  // namespace sync_file_system