[heap] Untangle Marking and friends from heap dependencies.

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/dcheck_always_on.gni")
 import("//build/config/mips.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 
@@ skipping 1211 matching lines @@
     "src/heap/heap-inl.h",
     "src/heap/heap.cc",
     "src/heap/heap.h",
     "src/heap/incremental-marking-job.cc",
     "src/heap/incremental-marking-job.h",
     "src/heap/incremental-marking.cc",
     "src/heap/incremental-marking.h",
     "src/heap/mark-compact-inl.h",
     "src/heap/mark-compact.cc",
     "src/heap/mark-compact.h",
+    "src/heap/marking.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",
@@ skipping 1153 matching lines @@
 
   deps = [
     ":fuzzer_support",
   ]
 
   configs = [ ":internal_config" ]
 }
 
 v8_fuzzer("wasm_asmjs_fuzzer") {
 }