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

base/memory/shared_memory_win.cc

 // Copyright (c) 2011 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 <aclapi.h>
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 138 matching lines @@
       memory_(NULL),
       read_only_(false),
       requested_size_(0) {}
 
 SharedMemory::SharedMemory(const SharedMemoryHandle& handle, bool read_only)
     : external_section_(true),
       mapped_size_(0),
       memory_(NULL),
       read_only_(read_only),
       requested_size_(0) {
-  DCHECK(!handle.IsValid() || handle.BelongsToCurrentProcess());
   mapped_file_.Set(handle.GetHandle());
 }
 
 SharedMemory::~SharedMemory() {
   Unmap();
   Close();
 }
 
 // static
 bool SharedMemory::IsHandleValid(const SharedMemoryHandle& handle) {
@@ skipping 157 matching lines @@
   return true;
 }
 
 SharedMemoryHandle SharedMemory::GetReadOnlyHandle() {
   HANDLE result;
   ProcessHandle process = GetCurrentProcess();
   if (!::DuplicateHandle(process, mapped_file_.Get(), process, &result,
                          FILE_MAP_READ | SECTION_QUERY, FALSE, 0)) {
     return SharedMemoryHandle();
   }
-  SharedMemoryHandle handle =
-      SharedMemoryHandle(result, base::GetProcId(process));
+  SharedMemoryHandle handle = SharedMemoryHandle(result);
   handle.SetOwnershipPassesToIPC(true);
   return handle;
 }
 
 void SharedMemory::Close() {
   mapped_file_.Close();
 }
 
 SharedMemoryHandle SharedMemory::handle() const {
-  return SharedMemoryHandle(mapped_file_.Get(), base::GetCurrentProcId());
+  return SharedMemoryHandle(mapped_file_.Get());
 }
 
 SharedMemoryHandle SharedMemory::TakeHandle() {
-  SharedMemoryHandle handle(mapped_file_.Take(), base::GetCurrentProcId());
+  SharedMemoryHandle handle(mapped_file_.Take());
   handle.SetOwnershipPassesToIPC(true);
   memory_ = nullptr;
   mapped_size_ = 0;
   return handle;
 }
 
 }  // namespace base