Update from https://crrev.com/320343

base/mac/scoped_mach_vm.cc

 // Copyright 2014 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/mac/scoped_mach_vm.h"
 
 namespace base {
 namespace mac {
 
 void ScopedMachVM::reset(vm_address_t address, vm_size_t size) {
-  DCHECK(address % PAGE_SIZE == 0);
-  DCHECK(size % PAGE_SIZE == 0);
+  DCHECK_EQ(address % PAGE_SIZE, 0u);
+  DCHECK_EQ(size % PAGE_SIZE, 0u);
 
   if (size_) {
     if (address_ < address) {
       vm_deallocate(mach_task_self(),
                     address_,
                     std::min(size_, address - address_));
     }
     if (address_ + size_ > address + size) {
       vm_address_t deallocate_start = std::max(address_, address + size);
       vm_deallocate(mach_task_self(),
                     deallocate_start,
                     address_ + size_ - deallocate_start);
     }
   }
 
   address_ = address;
   size_ = size;
 }
 
 }  // namespace mac
 }  // namespace base