[heap] Move symbols and internalized strings to global header

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 1012 matching lines @@
     "src/futex-emulation.h",
     "src/gdb-jit.cc",
     "src/gdb-jit.h",
     "src/global-handles.cc",
     "src/global-handles.h",
     "src/globals.h",
     "src/handles-inl.h",
     "src/handles.cc",
     "src/handles.h",
     "src/hashmap.h",
+    "src/heap-symbols.h",
     "src/heap/array-buffer-tracker.cc",
     "src/heap/array-buffer-tracker.h",
     "src/heap/gc-idle-time-handler.cc",
     "src/heap/gc-idle-time-handler.h",
     "src/heap/gc-tracer.cc",
     "src/heap/gc-tracer.h",
     "src/heap/heap-inl.h",
     "src/heap/heap.cc",
     "src/heap/heap.h",
     "src/heap/incremental-marking-job.cc",
@@ skipping 860 matching lines @@
     if (!is_component_build) {
       sources += [
         "$target_gen_dir/d8-js.cc",
       ]
     }
     if (v8_enable_i18n_support) {
       deps += [ "//third_party/icu" ]
     }
   }
 }