Created a new process type called the service process to host background task...

chrome/common/sandbox_init_wrapper_mac.cc

 // Copyright (c) 2009 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 "chrome/common/sandbox_init_wrapper.h"
 
 #include "base/command_line.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/sandbox_mac.h"
 
@@ skipping 41 matching lines @@
     allowed_dir = FilePath::FromWStringHack(
           command_line.GetSwitchValue(switches::kUtilityProcessAllowedDir));
   } else if (process_type == switches::kWorkerProcess) {
     // Worker process sandbox.
     sandbox_process_type = sandbox::SANDBOX_TYPE_WORKER;
   } else if (process_type == switches::kNaClLoaderProcess) {
     // Native Client sel_ldr (user untrusted code) sandbox.
     sandbox_process_type = sandbox::SANDBOX_TYPE_NACL_LOADER;
   } else if ((process_type == switches::kPluginProcess) ||
              (process_type == switches::kProfileImportProcess) ||
-             (process_type == switches::kGpuProcess)) {
+             (process_type == switches::kGpuProcess) ||
+             (process_type == switches::kServiceProcess)) {
     return true;
   } else {
     // Failsafe: If you hit an unreached here, is your new process type in need
     // of sandboxing?
     NOTREACHED();
     return true;
   }
 
   // Warm up APIs before turning on the sandbox.
   sandbox::SandboxWarmup();
 
   // Actually sandbox the process.
   return sandbox::EnableSandbox(sandbox_process_type, allowed_dir);
 }