Separate the generated files from core and modules to their own sub-dirs.

Source/bindings/idl.gypi

 # 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.
 
 # IDL file lists; see: http://www.chromium.org/developers/web-idl-interfaces
 
 {
   'includes': [
     'bindings.gypi',
     '../core/core.gypi',
     '../modules/modules.gypi',
   ],
 
   'variables': {
     # Main interface IDL files (excluding dependencies and testing)
     # are included as properties on global objects, and in aggregate bindings
     # FIXME: split into core vs. modules http://crbug.com/358074
     'main_interface_idl_files': [
       '<@(core_idl_files)',
       '<@(modules_idl_files)',
     ],
     # Write lists of main IDL files to a file, so that the command lines don't
     # exceed OS length limits.
     'main_interface_idl_files_list': '<|(main_interface_idl_files_list.tmp <@(main_interface_idl_files))',
 
     # Global constructors
     # FIXME: Split into core vs. modules http://crbug.com/358074
     'generated_global_constructors_idl_files': [
-      '<(blink_output_dir)/WindowConstructors.idl',
-      '<(blink_output_dir)/SharedWorkerGlobalScopeConstructors.idl',
-      '<(blink_output_dir)/DedicatedWorkerGlobalScopeConstructors.idl',
-      '<(blink_output_dir)/ServiceWorkerGlobalScopeConstructors.idl',
+      '<(core_output_dir)/WindowConstructors.idl',
+      '<(core_output_dir)/SharedWorkerGlobalScopeConstructors.idl',
+      '<(core_output_dir)/DedicatedWorkerGlobalScopeConstructors.idl',
+      '<(modules_output_dir)/ServiceWorkerGlobalScopeConstructors.idl',
     ],
 
     'generated_global_constructors_header_files': [
-      '<(blink_output_dir)/WindowConstructors.h',
-      '<(blink_output_dir)/SharedWorkerGlobalScopeConstructors.h',
-      '<(blink_output_dir)/DedicatedWorkerGlobalScopeConstructors.h',
-      '<(blink_output_dir)/ServiceWorkerGlobalScopeConstructors.h',
+      '<(core_output_dir)/WindowConstructors.h',
+      '<(core_output_dir)/SharedWorkerGlobalScopeConstructors.h',
+      '<(core_output_dir)/DedicatedWorkerGlobalScopeConstructors.h',
+      '<(modules_output_dir)/ServiceWorkerGlobalScopeConstructors.h',
     ],
   },
 }