[Build Fix] Add missing #include

components/nacl/browser/nacl_process_host.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 "components/nacl/browser/nacl_process_host.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
 #include "base/base_switches.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/path_service.h"
 #include "base/process/launch.h"
 #include "base/process/process_iterator.h"
 #include "base/rand_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
+#include "base/threading/sequenced_worker_pool.h"
 #include "base/win/windows_version.h"
 #include "build/build_config.h"
 #include "components/nacl/browser/nacl_browser.h"
 #include "components/nacl/browser/nacl_host_message_filter.h"
 #include "components/nacl/common/nacl_cmd_line.h"
 #include "components/nacl/common/nacl_host_messages.h"
 #include "components/nacl/common/nacl_messages.h"
 #include "components/nacl/common/nacl_process_type.h"
 #include "components/nacl/common/nacl_switches.h"
 #include "content/public/browser/browser_child_process_host.h"
@@ skipping 977 matching lines @@
         process_handle.Take(), info,
         base::MessageLoopProxy::current(),
         base::Bind(&NaClProcessHost::OnDebugExceptionHandlerLaunchedByBroker,
                    weak_factory_.GetWeakPtr()));
     return true;
   }
 }
 #endif
 
 }  // namespace nacl