Automated IWYU fix for TaskRunner includes.

components/drive/chromeos/search_metadata.h

 // Copyright (c) 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.
 
 #ifndef COMPONENTS_DRIVE_CHROMEOS_SEARCH_METADATA_H_
 #define COMPONENTS_DRIVE_CHROMEOS_SEARCH_METADATA_H_
 
 #include <stddef.h>
 
 #include <memory>
 #include <string>
 #include <vector>
 
+#include "base/sequenced_task_runner.h"
 #include "components/drive/chromeos/file_system_interface.h"
 
 namespace base {
 namespace i18n {
 class FixedPatternStringSearchIgnoringCaseAndAccents;
 }  // namespace i18n
 }  // namespace base
 
 namespace drive {
 namespace internal {
@@ skipping 39 matching lines @@
 bool FindAndHighlight(
     const std::string& text,
     const std::vector<std::unique_ptr<
         base::i18n::FixedPatternStringSearchIgnoringCaseAndAccents>>& queries,
     std::string* highlighted_text);
 
 }  // namespace internal
 }  // namespace drive
 
 #endif  // COMPONENTS_DRIVE_CHROMEOS_SEARCH_METADATA_H_