Remove zombie hunting on startup.

chrome/browser/browser_main.cc

 // Copyright (c) 2006-2008 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 "build/build_config.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "base/field_trial.h"
@@ skipping 384 matching lines @@
 
   // Importing other browser settings is done in a browser-like process
   // that exits when this task has finished.
   if (parsed_command_line.HasSwitch(switches::kImport))
     return FirstRun::ImportNow(profile, parsed_command_line);
 
   // When another process is running, use it instead of starting us.
   if (process_singleton.NotifyOtherProcess())
     return ResultCodes::NORMAL_EXIT;
 
-  process_singleton.HuntForZombieChromeProcesses();
-
   // Do the tasks if chrome has been upgraded while it was last running.
   if (!already_running && DoUpgradeTasks(parsed_command_line)) {
     return ResultCodes::NORMAL_EXIT;
   }
 
   // Check if there is any machine level Chrome installed on the current
   // machine. If yes and the current Chrome process is user level, we do not
   // allow the user level Chrome to run. So we notify the user and uninstall
   // user level Chrome.
   // Note this check should only happen here, after all the checks above
@@ skipping 154 matching lines @@
   if (metrics)
     metrics->Stop();
 
   // browser_shutdown takes care of deleting browser_process, so we need to
   // release it.
   browser_process.release();
   browser_shutdown::Shutdown();
 
   return result_code;
 }