Get rid of all pid references from base::SharedMemoryHandle.

base/memory/shared_memory_mac.cc

 // 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/memory/shared_memory.h"
 
 #include <errno.h>
 #include <mach/mach_vm.h>
 #include <stddef.h>
 #include <sys/mman.h>
@@ skipping 56 matching lines @@
 
   // Make new memory object.
   mach_port_t named_right;
   kern_return_t kr = mach_make_memory_entry_64(
       mach_task_self(), reinterpret_cast<memory_object_size_t*>(&size),
       reinterpret_cast<memory_object_offset_t>(temp_addr), VM_PROT_READ,
       &named_right, MACH_PORT_NULL);
   if (kr != KERN_SUCCESS)
     return false;
 
-  *new_handle = SharedMemoryHandle(named_right, size, base::GetCurrentProcId());
+  *new_handle = SharedMemoryHandle(named_right, size);
   return true;
 }
 
 
 }  // namespace
 
 SharedMemory::SharedMemory()
     : mapped_memory_mechanism_(SharedMemoryHandle::MACH),
       mapped_size_(0),
       memory_(NULL),
@@ skipping 183 matching lines @@
 
   DCHECK(shm_.IsValid());
   base::SharedMemoryHandle new_handle;
   bool success = MakeMachSharedMemoryHandleReadOnly(&new_handle, shm_, memory_);
   if (success)
     new_handle.SetOwnershipPassesToIPC(true);
   return new_handle;
 }
 
 }  // namespace base