Switch to standard integer types in components/, part 1 of 4.

components/drive/file_system/search_operation_unittest.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 "components/drive/file_system/search_operation.h"
 
+#include <stddef.h>
+
 #include "base/callback_helpers.h"
 #include "components/drive/change_list_loader.h"
 #include "components/drive/file_system/operation_test_base.h"
 #include "components/drive/service/fake_drive_service.h"
 #include "content/public/test/test_utils.h"
 #include "google_apis/drive/drive_api_parser.h"
 #include "google_apis/drive/test_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace drive {
@@ skipping 131 matching lines @@
   // Unlock, this should resume the pending search.
   lock.reset();
   content::RunAllBlockingPoolTasksUntilIdle();
   EXPECT_EQ(FILE_ERROR_OK, error);
   ASSERT_TRUE(results);
   EXPECT_EQ(1u, results->size());
 }
 
 }  // namespace file_system
 }  // namespace drive