Moved the ExternalReferenceTable class to src/external-reference-table.cc/.h

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 1001 matching lines @@
     "src/extensions/externalize-string-extension.cc",
     "src/extensions/externalize-string-extension.h",
     "src/extensions/free-buffer-extension.cc",
     "src/extensions/free-buffer-extension.h",
     "src/extensions/gc-extension.cc",
     "src/extensions/gc-extension.h",
     "src/extensions/statistics-extension.cc",
     "src/extensions/statistics-extension.h",
     "src/extensions/trigger-failure-extension.cc",
     "src/extensions/trigger-failure-extension.h",
+    "src/external-reference-table.cc",
+    "src/external-reference-table.h",
     "src/factory.cc",
     "src/factory.h",
     "src/fast-accessor-assembler.cc",
     "src/fast-accessor-assembler.h",
     "src/fast-dtoa.cc",
     "src/fast-dtoa.h",
     "src/field-index.h",
     "src/field-index-inl.h",
     "src/field-type.cc",
     "src/field-type.h",
@@ skipping 1062 matching lines @@
 
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [ "//build/config/compiler:no_chromium_code" ]
   configs += [
     ":internal_config",
     ":libplatform_config",
     ":features",
     ":toolchain",
   ]
 }