Initial patch for the web modules layered platform proposal.

Source/bindings/core/core.gni

 # 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.
 
 # FIXME: factor out bindings_core http://crbug.com/358074
 import("//third_party/WebKit/Source/bindings/bindings.gni")
 import("//third_party/WebKit/Source/core/core.gni")
 
 bindings_core_output_dir = "$bindings_output_dir/core"
+bindings_core_web_modules_output_dir = "$bindings_core_output_dir/webmodules"
 
 # Global constructors
 core_global_constructors_original_interfaces = [
   "Window",
   "SharedWorkerGlobalScope",
   "DedicatedWorkerGlobalScope",
 ]
 
 core_global_constructors_generated_idl_files = []
 foreach (interface, core_global_constructors_original_interfaces) {
   core_global_constructors_generated_idl_files += [
     "$blink_core_output_dir/${interface}CoreConstructors.idl"
   ]
 }
+
+# TODO(ojan): Auto-generate this list from the list of idl inputs.
+bindings_core_generated_web_modules_files = [
+  "$bindings_core_web_modules_output_dir/WebModuleNode.cpp",
+]