[WIP Prototype] ES6 https://html.spec.whatwg.org/#fetch-a-single-module-script implementation

third_party/WebKit/Source/core/dom/BUILD.gn

 # Copyright 2016 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("//third_party/WebKit/Source/core/core.gni")
 
 blink_core_sources("dom") {
   split_count = 5
 
   sources = [
@@ skipping 162 matching lines @@
     "LayoutTreeBuilderTraversal.h",
     "LiveNodeList.cpp",
     "LiveNodeList.h",
     "LiveNodeListBase.cpp",
     "LiveNodeListBase.h",
     "MessageChannel.cpp",
     "MessageChannel.h",
     "MessagePort.cpp",
     "Modulator.cpp",
     "Modulator.h",
+    "ModulatorImpl.cpp",
+    "ModulatorImpl.h",
     "ModuleMap.cpp",
     "ModuleMap.h",
     "ModuleScript.cpp",
     "ModuleScript.h",
     "MutationCallback.h",
     "MutationObserver.cpp",
     "MutationObserver.h",
     "MutationObserverInterestGroup.cpp",
     "MutationObserverInterestGroup.h",
     "MutationObserverRegistration.cpp",
@@ skipping 53 matching lines @@
     "ResizeObserverEntry.cpp",
     "ResizeObserverEntry.h",
     "SandboxFlags.cpp",
     "SandboxFlags.h",
     "ScopedWindowFocusAllowedIndicator.h",
     "ScriptElementBase.cpp",
     "ScriptElementBase.h",
     "ScriptLoader.cpp",
     "ScriptLoader.h",
     "ScriptModuleResolver.h",
+    "ScriptModuleResolverImpl.cpp",
+    "ScriptModuleResolverImpl.h",
     "ScriptRunner.cpp",
     "ScriptRunner.h",
     "ScriptableDocumentParser.cpp",
     "ScriptableDocumentParser.h",
     "ScriptedAnimationController.cpp",
     "ScriptedAnimationController.h",
     "ScriptedIdleTaskController.cpp",
     "ScriptedIdleTaskController.h",
     "SecurityContext.cpp",
     "SecurityContext.h",
@@ skipping 152 matching lines @@
     "shadow/SlotAssignment.h",
     "shadow/SlotScopedTraversal.cpp",
     "shadow/SlotScopedTraversal.h",
   ]
 
   configs += [
     # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
     "//build/config/compiler:no_size_t_to_int_warning",
   ]
 }