Fix iOS some more after r269483.

base/mac/scoped_mach_vm.h

 // 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.
 
 #ifndef BASE_MAC_SCOPED_MACH_VM_H_
 #define BASE_MAC_SCOPED_MACH_VM_H_
 
 #include <mach/mach.h>
-#include <mach/mach_vm.h>
 
 #include <algorithm>
 
 #include "base/base_export.h"
 #include "base/basictypes.h"
 #include "base/logging.h"
+#include "build/build_config.h"
+
+#if !defined(OS_IOS)
+#include <mach/mach_vm.h>
+#else  // OS_IOS
+// mach_vm.h is forbidden on iOS, but the routines in vm_map.h are a suitable
+// substitute.
+#include <mach/vm_map.h>
+#define mach_vm_address_t vm_address_t
+#define mach_vm_size_t vm_size_t
+#define mach_vm_deallocate vm_deallocate
+#endif  // OS_IOS
 
 // Use ScopedMachVM to supervise ownership of pages in the current process
 // through the Mach VM subsystem. Pages allocated with mach_vm_allocate can be
 // released when exiting a scope with ScopedMachVM.
 //
 // The Mach VM subsystem operates on a page-by-page basis, and a single VM
 // allocation managed by a ScopedMachVM object may span multiple pages. As far
 // as Mach is concerned, allocated pages may be deallocated individually. This
 // is in contrast to higher-level allocators such as malloc, where the base
 // address of an allocation implies the size of an allocated block.
@@ skipping 58 matching lines @@
  private:
   mach_vm_address_t address_;
   mach_vm_size_t size_;
 
   DISALLOW_COPY_AND_ASSIGN(ScopedMachVM);
 };
 
 }  // namespace mac
 }  // namespace base
 
+#if defined(OS_IOS)
+#undef mach_vm_address_t
+#undef mach_vm_size_t
+#undef mach_vm_deallocate
+#endif  // OS_IOS
+
 #endif  // BASE_MAC_SCOPED_MACH_VM_H_