Revert 198844 "Move sequenced_task_runner to base/task"

trunk/src/chrome/browser/process_singleton_linux.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.
 
 // On Linux, when the user tries to launch a second copy of chrome, we check
 // for a socket in the user's profile directory.  If the socket file is open we
 // send a message to the first chrome browser process with the current
 // directory and second process command line flags.  The second process then
 // exits.
 //
@@ skipping 50 matching lines @@
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/path_service.h"
 #include "base/posix/eintr_wrapper.h"
 #include "base/process_util.h"
 #include "base/rand_util.h"
 #include "base/safe_strerror_posix.h"
+#include "base/sequenced_task_runner_helpers.h"
 #include "base/stl_util.h"
 #include "base/stringprintf.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
 #include "base/strings/sys_string_conversions.h"
-#include "base/task/sequenced_task_runner_helpers.h"
 #include "base/threading/platform_thread.h"
 #include "base/time.h"
 #include "base/timer.h"
 #include "base/utf_string_conversions.h"
 #if defined(TOOLKIT_GTK)
 #include "chrome/browser/ui/gtk/process_singleton_dialog.h"
 #endif
 #include "chrome/common/chrome_constants.h"
 #include "content/public/browser/browser_thread.h"
 #include "grit/chromium_strings.h"
@@ skipping 890 matching lines @@
 }
 
 void ProcessSingleton::KillProcess(int pid) {
   // TODO(james.su@gmail.com): Is SIGKILL ok?
   int rv = kill(static_cast<base::ProcessHandle>(pid), SIGKILL);
   // ESRCH = No Such Process (can happen if the other process is already in
   // progress of shutting down and finishes before we try to kill it).
   DCHECK(rv == 0 || errno == ESRCH) << "Error killing process: "
                                     << safe_strerror(errno);
 }