Add request header on gdata operation for testing ETag match.

chrome/browser/google_apis/gdata_wapi_service_browsertest.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 "base/bind.h"
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/json/json_reader.h"
 #include "chrome/browser/google_apis/auth_service.h"
@@ skipping 64 matching lines @@
 }  // namespace
 
 IN_PROC_BROWSER_TEST_F(GDataTest, Download) {
   gdata::GDataErrorCode result = gdata::GDATA_OTHER_ERROR;
   std::string contents;
   service_->DownloadFile(
       FilePath(FILE_PATH_LITERAL("/dummy/gdata/testfile.txt")),
       GetTestCachedFilePath(FilePath(
           FILE_PATH_LITERAL("cached_testfile.txt"))),
       gdata_test_server_.GetURL("files/chromeos/gdata/testfile.txt"),
+      std::string(),

[kochi, 2012/10/16 05:04:58]

Can you add a comment?

[tzik, 2012/10/16 05:48:05]

Done.

       base::Bind(&TestDownloadCallback, &result, &contents),
       gdata::GetContentCallback());
   content::RunMessageLoop();
 
   EXPECT_EQ(gdata::HTTP_SUCCESS, result);
   FilePath expected_filepath = gdata_test_server_.document_root().Append(
       FilePath(FILE_PATH_LITERAL("chromeos/gdata/testfile.txt")));
   std::string expected_contents;
   file_util::ReadFileToString(expected_filepath, &expected_contents);
   EXPECT_EQ(expected_contents, contents);
 }
 
 IN_PROC_BROWSER_TEST_F(GDataTest, NonExistingDownload) {
   gdata::GDataErrorCode result = gdata::GDATA_OTHER_ERROR;
   std::string dummy_contents;
   service_->DownloadFile(
       FilePath(FILE_PATH_LITERAL("/dummy/gdata/no-such-file.txt")),
       GetTestCachedFilePath(FilePath(
           FILE_PATH_LITERAL("cache_no-such-file.txt"))),
       gdata_test_server_.GetURL("files/chromeos/gdata/no-such-file.txt"),
+      std::string(),

[kochi, 2012/10/16 05:04:58]

Ditto.

[tzik, 2012/10/16 05:48:05]

Done.

       base::Bind(&TestDownloadCallback, &result, &dummy_contents),
       gdata::GetContentCallback());
   content::RunMessageLoop();
 
   EXPECT_EQ(gdata::HTTP_NOT_FOUND, result);
   // Do not verify the not found message.
 }
 
 IN_PROC_BROWSER_TEST_F(GDataTest, GetDocuments) {
   gdata::GDataErrorCode result = gdata::GDATA_OTHER_ERROR;
@@ skipping 29 matching lines @@
       std::string(),  // search string
       std::string(),  // directory resource ID
       base::Bind(&TestGetDocumentsCallback, &result, &result_data));
   content::RunMessageLoop();
 
   EXPECT_EQ(gdata::GDATA_PARSE_ERROR, result);
   EXPECT_FALSE(result_data);
 }
 
 }  // namespace drive