Remove 32-bit Mac implementation of EnableTerminationOnHeapCorruption().

base/BUILD.gn

 # 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.
 
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 }
@@ skipping 882 matching lines @@
   if (is_mac) {
     sources += [
       "memory/discardable_memory_mach.cc",
       "memory/discardable_memory_mach.h",
     ]
     sources -= [
       "base_paths_posix.cc",
       "native_library_posix.cc",
       "strings/sys_string_conversions_posix.cc",
     ]
-    deps += [ "//third_party/mach_override" ]
   } else {
     # Non-Mac.
     sources -= [
       "files/file_path_watcher_fsevents.cc",
       "files/file_path_watcher_fsevents.h",
       "files/file_path_watcher_kqueue.cc",
       "files/file_path_watcher_kqueue.h",
     ]
   }
 
@@ skipping 623 matching lines @@
 
   # GYP: //base.gyp:base_java_unittest_support
   android_library("base_java_unittest_support") {
     deps = [
       ":base_java",
     ]
     java_files =
         [ "test/android/java/src/org/chromium/base/ContentUriTestUtils.java" ]
   }
 }