Add an option to specify requested fields for fetching metadata.

chrome/browser/media_galleries/fileapi/native_media_file_util_unittest.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 <set>
 #include <string>
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
@@ skipping 482 matching lines @@
       FileSystemURL url = CreateURL(kFilteringTestCases[i].path);
 
       std::string test_name = base::StringPrintf(
           "GetMetadataFiltering run %d test %" PRIuS, loop_count, i);
       base::File::Error expectation = base::File::FILE_OK;
       if (loop_count == 0 || !kFilteringTestCases[i].visible) {
         // Cannot get metadata from files that do not exist or are not visible.
         expectation = base::File::FILE_ERROR_NOT_FOUND;
       }
       operation_runner()->GetMetadata(
-          url,
-          base::Bind(&ExpectMetadataEqHelper,
-                     test_name,
-                     expectation,
+          url, storage::FileSystemOperation::GET_METADATA_FIELD_IS_DIRECTORY,
+          base::Bind(&ExpectMetadataEqHelper, test_name, expectation,
                      kFilteringTestCases[i].is_directory));
       base::MessageLoop::current()->RunUntilIdle();
     }
   }
 }
 
 TEST_F(NativeMediaFileUtilTest, RemoveFileFiltering) {
   // Run the loop twice. The first run has no files. The second run does.
   for (int loop_count = 0; loop_count < 2; ++loop_count) {
     if (loop_count == 1) {
@@ skipping 46 matching lines @@
       expected_error = base::File::FILE_OK;
     else
       expected_error = base::File::FILE_ERROR_SECURITY;
     error = base::File::FILE_ERROR_FAILED;
     operation_runner()->CreateSnapshotFile(url,
         base::Bind(CreateSnapshotCallback, &error));
     base::MessageLoop::current()->RunUntilIdle();
     ASSERT_EQ(expected_error, error);
   }
 }