Add request header on gdata operation for testing ETag match.

chrome/browser/chromeos/drive/drive_uploader.cc

 // 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.
 
 #include "chrome/browser/chromeos/drive/drive_uploader.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 286 matching lines @@
     if (upload_file_info->initial_upload_location.is_empty()) {
       UploadFailed(upload_file_info, DRIVE_FILE_ERROR_ABORT);
       return;
     }
     drive_service_->InitiateUpload(
         gdata::InitiateUploadParams(upload_file_info->upload_mode,
                              upload_file_info->title,
                              upload_file_info->content_type,
                              upload_file_info->content_length,
                              upload_file_info->initial_upload_location,
-                             upload_file_info->drive_path),
+                             upload_file_info->drive_path,
+                             upload_file_info->etag),
         base::Bind(&DriveUploader::OnUploadLocationReceived,
                    weak_ptr_factory_.GetWeakPtr(),
                    upload_file_info->upload_id));
   }
   // The uploader gets ready after we complete opening the file, called
   // from the StartUploadFile method. We use PostTask on purpose, because
   // this callback is called by FileStream, and we may access FileStream
   // again from the |ready_callback| implementation. FileStream is not
   // reentrant.
   //
@@ skipping 246 matching lines @@
   return "title=[" + title +
          "], file_path=[" + file_path.AsUTF8Unsafe() +
          "], content_type=[" + content_type +
          "], content_length=[" + base::UintToString(content_length) +
          "], file_size=[" + base::UintToString(file_size) +
          "], drive_path=[" + drive_path.AsUTF8Unsafe() +
          "]";
 }
 
 }  // namespace drive