Implement parallel pointer updates after evacuation.

BUILD.gn

 # 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.
 
 import("//build/config/android/config.gni")
 import("//build/config/arm.gni")
 import("//build/config/mips.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 
 if (is_android) {
@@ skipping 1054 matching lines @@
     "src/heap/mark-compact-inl.h",
     "src/heap/mark-compact.cc",
     "src/heap/mark-compact.h",
     "src/heap/memory-reducer.cc",
     "src/heap/memory-reducer.h",
     "src/heap/object-stats.cc",
     "src/heap/object-stats.h",
     "src/heap/objects-visiting-inl.h",
     "src/heap/objects-visiting.cc",
     "src/heap/objects-visiting.h",
+    "src/heap/page-parallel-job.h",
     "src/heap/remembered-set.cc",
     "src/heap/remembered-set.h",
     "src/heap/scavenge-job.h",
     "src/heap/scavenge-job.cc",
     "src/heap/scavenger-inl.h",
     "src/heap/scavenger.cc",
     "src/heap/scavenger.h",
     "src/heap/slot-set.h",
     "src/heap/spaces-inl.h",
     "src/heap/spaces.cc",
@@ skipping 1006 matching lines @@
 
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [ "//build/config/compiler:no_chromium_code" ]
   configs += [
     ":internal_config",
     ":libplatform_config",
     ":features",
     ":toolchain",
   ]
 }