Refactor the bootstrap sandbox process launching integration.

base/process/launch.h

Index: base/process/launch.h
diff --git a/base/process/launch.h b/base/process/launch.h
index e17cee528135ab1ca37d7642f91fba0995bbf2a3..42b8a7670d9a02dc6b08e3e577d08bfb30057bd6 100644
--- a/base/process/launch.h
+++ b/base/process/launch.h
@@ -164,16 +164,6 @@ struct BASE_EXPORT LaunchOptions {
   // process' controlling terminal.
   int ctrl_terminal_fd;
 #endif  // defined(OS_CHROMEOS)
-
-#if defined(OS_MACOSX)
-  // If this name is non-empty, the new child, after fork() but before exec(),
-  // will look up this server name in the bootstrap namespace. The resulting
-  // service port will be replaced as the bootstrap port in the child. Because
-  // the process's IPC space is cleared on exec(), any rights to the old
-  // bootstrap port will not be transferred to the new process.
-  std::string replacement_bootstrap_name;
-#endif
-
 #endif  // !defined(OS_WIN)
 };
 
@@ -290,11 +280,6 @@ BASE_EXPORT void RaiseProcessToHighPriority();
 // in the child after forking will restore the standard exception handler.
 // See http://crbug.com/20371/ for more details.
 void RestoreDefaultExceptionHandler();
-
-// Look up the bootstrap server named |replacement_bootstrap_name| via the
-// current |bootstrap_port|. Then replace the task's bootstrap port with the
-// received right.
-void ReplaceBootstrapPort(const std::string& replacement_bootstrap_name);
 #endif  // defined(OS_MACOSX)
 
 // Creates a LaunchOptions object suitable for launching processes in a test