Automated IWYU fix for TaskRunner includes.

base/trace_event/memory_dump_manager_unittest.cc

 // Copyright 2015 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/trace_event/memory_dump_manager.h"
 
 #include <stdint.h>
 
 #include <memory>
 #include <utility>
 #include <vector>
 
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
+#include "base/single_thread_task_runner.h"
 #include "base/strings/stringprintf.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/test/sequenced_worker_pool_owner.h"
 #include "base/test/test_io_thread.h"
 #include "base/test/trace_event_analyzer.h"
 #include "base/threading/platform_thread.h"
 #include "base/threading/sequenced_task_runner_handle.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_task_runner_handle.h"
@@ skipping 1374 matching lines @@
   EXPECT_EQ(3u, result.chrome_dump.v8_total_kb);
   // partition_alloc has partition_alloc/allocated_objects/* which is a subset
   // of partition_alloc/partitions/* so we only count the latter.
   EXPECT_EQ(4u, result.chrome_dump.partition_alloc_total_kb);
   // resident_set_kb should read from process_totals.
   EXPECT_EQ(5u, result.os_dump.resident_set_kb);
 };
 
 }  // namespace trace_event
 }  // namespace base