[Mac] Replace the existing browser-child mach ipc with a long-lived listener ...

base/process_util.h

 // Copyright (c) 2010 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.
 
 // This file/namespace contains utility functions for enumerating, ending and
 // computing statistics of processes.
 
 #ifndef BASE_PROCESS_UTIL_H_
 #define BASE_PROCESS_UTIL_H_
 #pragma once
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 // AlterEnvironment returns a modified environment vector, constructed from the
 // given environment and the list of changes given in |changes|. Each key in
 // the environment is matched against the first element of the pairs. In the
 // event of a match, the value is replaced by the second of the pair, unless
 // the second is empty, in which case the key-value is removed.
 //
 // The returned array is allocated using new[] and must be freed by the caller.
 char** AlterEnvironment(const environment_vector& changes,
                         const char* const* const env);
-
-#if defined(OS_MACOSX)
-// Similar to the above, but also returns the new process's task_t if
-// |task_handle| is not NULL. If |task_handle| is not NULL, the caller is
-// responsible for calling |mach_port_deallocate()| on the returned handle.
-bool LaunchAppAndGetTask(const std::vector<std::string>& argv,
-                         const environment_vector& environ,
-                         const file_handle_mapping_vector& fds_to_remap,
-                         bool wait,
-                         task_t* task_handle,
-                         ProcessHandle* process_handle);
-#endif  // defined(OS_MACOSX)
 #endif  // defined(OS_POSIX)
 
 // Executes the application specified by cl. This function delegates to one
 // of the above two platform-specific functions.
 bool LaunchApp(const CommandLine& cl,
                bool wait, bool start_hidden, ProcessHandle* process_handle);
 
 // Executes the application specified by |cl| and wait for it to exit. Stores
 // the output (stdout) in |output|. Redirects stderr to /dev/null. Returns true
 // on success (application launched and exited cleanly, with exit code
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 // instance running inside the parent.  The parent's Breakpad instance should
 // not handle the child's exceptions.  Calling RestoreDefaultExceptionHandler
 // in the child after forking will restore the standard exception handler.
 // See http://crbug.com/20371/ for more details.
 void RestoreDefaultExceptionHandler();
 #endif  // defined(OS_MACOSX)
 
 }  // namespace base
 
 #endif  // BASE_PROCESS_UTIL_H_