Split ProcessHandle and its related routines into base/process/process_handle.h.

base/process_util_ios.mm

 // 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.
 
 #include "base/process_util.h"
 
 #import <Foundation/Foundation.h>
 #include <stdio.h>
 #include <sys/resource.h>
 
 #include "base/logging.h"
 
 // This is just enough of a shim to let the support needed by test_support
 // link.  In general, process_util isn't valid on iOS.
 
 namespace base {
 
-ProcessId GetCurrentProcId() {
-  return getpid();
-}
-
-ProcessHandle GetCurrentProcessHandle() {
-  return GetCurrentProcId();
-}
-
 void RaiseProcessToHighPriority() {
   // Impossible on iOS. Do nothing.
 }
 
-size_t GetMaxFds() {
-  static const rlim_t kSystemDefaultMaxFds = 256;
-  rlim_t max_fds;
-  struct rlimit nofile;
-  if (getrlimit(RLIMIT_NOFILE, &nofile)) {
-    // Error case: Take a best guess.
-    max_fds = kSystemDefaultMaxFds;
-  } else {
-    max_fds = nofile.rlim_cur;
-  }
-
-  if (max_fds > INT_MAX)
-    max_fds = INT_MAX;
-
-  return static_cast<size_t>(max_fds);
-}
-
 }  // namespace base