Update OS version functions for OS X 10.11 El Capitan.

base/process/memory_mac.mm

 // Copyright (c) 2013 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/memory.h"
 
 #include <CoreFoundation/CoreFoundation.h>
 #include <errno.h>
 #include <mach/mach.h>
 #include <mach/mach_vm.h>
@@ skipping 228 matching lines @@
 
 void oom_killer_new() {
   TerminateBecauseOutOfMemory(0);
 }
 
 #if !defined(ADDRESS_SANITIZER)
 
 // === Core Foundation CFAllocators ===
 
 bool CanGetContextForCFAllocator() {
-  return !base::mac::IsOSLaterThanYosemite_DontCallThis();
+  return !base::mac::IsOSLaterThanElCapitan_DontCallThis();
 }
 
 CFAllocatorContext* ContextForCFAllocator(CFAllocatorRef allocator) {
   if (base::mac::IsOSSnowLeopard()) {
     ChromeCFAllocatorLeopards* our_allocator =
         const_cast<ChromeCFAllocatorLeopards*>(
             reinterpret_cast<const ChromeCFAllocatorLeopards*>(allocator));
     return &our_allocator->_context;
   } else if (base::mac::IsOSLion() ||
              base::mac::IsOSMountainLion() ||
              base::mac::IsOSMavericks() ||
-             base::mac::IsOSYosemite()) {
+             base::mac::IsOSYosemite() ||
+             base::mac::IsOSElCapitan()) {

[Avi (use Gerrit), 2015/07/15 23:29:01]

Have you tested the offsets? (Basically, does it immediately crash if you put
this in? :) )

[Andre, 2015/07/16 20:18:39]

No, this does not immediately crash running on 10.11.
Running the diagnostic tool from the bug:
This is Mac OS X 10.11 (15A216g), running in 64-bit mode.
CFAllocatorContext offset is 136, expected for Mac OS X 10.7-10.8

     ChromeCFAllocatorLions* our_allocator =
         const_cast<ChromeCFAllocatorLions*>(
             reinterpret_cast<const ChromeCFAllocatorLions*>(allocator));
     return &our_allocator->_context;
   } else {
     return NULL;
   }
 }
 
 CFAllocatorAllocateCallBack g_old_cfallocator_system_default;
@@ skipping 280 matching lines @@
                                             @selector(allocWithZone:));
   g_old_allocWithZone = reinterpret_cast<allocWithZone_t>(
       method_getImplementation(orig_method));
   CHECK(g_old_allocWithZone)
       << "Failed to get allocWithZone allocation function.";
   method_setImplementation(orig_method,
                            reinterpret_cast<IMP>(oom_killer_allocWithZone));
 }
 
 }  // namespace base