Automated IWYU fix for TaskRunner includes.

content/browser/tracing/memory_tracing_browsertest.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 <stdint.h>
 
 #include "base/bind.h"
 #include "base/callback_forward.h"
 #include "base/command_line.h"
 #include "base/run_loop.h"
+#include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/trace_event/memory_dump_manager.h"
 #include "base/trace_event/memory_dump_provider.h"
 #include "base/trace_event/memory_dump_request_args.h"
 #include "base/trace_event/trace_config_memory_test_util.h"
 #include "base/trace_event/trace_log.h"
 #include "content/public/browser/tracing_controller.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/test/browser_test_utils.h"
 #include "content/public/test/content_browser_test.h"
@@ skipping 297 matching lines @@
   EXPECT_CALL(*this, OnMemoryDumpDone(_, true /* success */));
 
   EnableMemoryTracing();
   RequestGlobalDumpAndWait(false /* from_renderer_thread */,
                            MemoryDumpType::EXPLICITLY_TRIGGERED,
                            MemoryDumpLevelOfDetail::DETAILED);
   DisableTracing();
 }
 
 }  // namespace content