Move builtin JavaScript sources into own directory.

tools/gyp/v8.gyp

 # Copyright 2012 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 1787 matching lines @@
       'type': 'none',
       'conditions': [
         ['want_separate_host_toolset==1', {
           'toolsets': ['host'],
         }, {
           'toolsets': ['target'],
         }],
         ['v8_enable_i18n_support==1', {
           'variables': {
             'i18n_library_files': [
-              '../../src/i18n.js',
+              '../../src/js/i18n.js',
             ],
           },
         }, {
           'variables': {
             'i18n_library_files': [],
           },
         }],
       ],
       'variables': {
         'library_files': [
-          '../../src/macros.py',
+          '../../src/js/macros.py',
           '../../src/messages.h',
-          '../../src/prologue.js',
-          '../../src/runtime.js',
-          '../../src/v8natives.js',
-          '../../src/symbol.js',
-          '../../src/array.js',
-          '../../src/string.js',
-          '../../src/uri.js',
-          '../../src/math.js',
+          '../../src/js/prologue.js',
+          '../../src/js/runtime.js',
+          '../../src/js/v8natives.js',
+          '../../src/js/symbol.js',
+          '../../src/js/array.js',
+          '../../src/js/string.js',
+          '../../src/js/uri.js',
+          '../../src/js/math.js',
           '../../src/third_party/fdlibm/fdlibm.js',
-          '../../src/date.js',
-          '../../src/regexp.js',
-          '../../src/arraybuffer.js',
-          '../../src/typedarray.js',
-          '../../src/iterator-prototype.js',
-          '../../src/generator.js',
-          '../../src/object-observe.js',
-          '../../src/collection.js',
-          '../../src/weak-collection.js',
-          '../../src/collection-iterator.js',
-          '../../src/promise.js',
-          '../../src/messages.js',
-          '../../src/json.js',
-          '../../src/array-iterator.js',
-          '../../src/string-iterator.js',
-          '../../src/templates.js',
-          '../../src/harmony-array.js',
-          '../../src/harmony-typedarray.js',
+          '../../src/js/date.js',
+          '../../src/js/regexp.js',
+          '../../src/js/arraybuffer.js',
+          '../../src/js/typedarray.js',
+          '../../src/js/iterator-prototype.js',
+          '../../src/js/generator.js',
+          '../../src/js/object-observe.js',
+          '../../src/js/collection.js',
+          '../../src/js/weak-collection.js',
+          '../../src/js/collection-iterator.js',
+          '../../src/js/promise.js',
+          '../../src/js/messages.js',
+          '../../src/js/json.js',
+          '../../src/js/array-iterator.js',
+          '../../src/js/string-iterator.js',
+          '../../src/js/templates.js',
+          '../../src/js/harmony-array.js',
+          '../../src/js/harmony-typedarray.js',
           '../../src/debug/mirrors.js',
           '../../src/debug/debug.js',
           '../../src/debug/liveedit.js',
         ],
         'experimental_library_files': [
-          '../../src/macros.py',
+          '../../src/js/macros.py',
           '../../src/messages.h',
-          '../../src/proxy.js',
-          '../../src/generator.js',
-          '../../src/harmony-atomics.js',
-          '../../src/harmony-array-includes.js',
-          '../../src/harmony-concat-spreadable.js',
-          '../../src/harmony-tostring.js',
-          '../../src/harmony-regexp.js',
-          '../../src/harmony-reflect.js',
-          '../../src/harmony-spread.js',
-          '../../src/harmony-object-observe.js',
-          '../../src/harmony-sharedarraybuffer.js',
-          '../../src/harmony-simd.js',
+          '../../src/js/proxy.js',
+          '../../src/js/generator.js',
+          '../../src/js/harmony-atomics.js',
+          '../../src/js/harmony-array-includes.js',
+          '../../src/js/harmony-concat-spreadable.js',
+          '../../src/js/harmony-tostring.js',
+          '../../src/js/harmony-regexp.js',
+          '../../src/js/harmony-reflect.js',
+          '../../src/js/harmony-spread.js',
+          '../../src/js/harmony-object-observe.js',
+          '../../src/js/harmony-sharedarraybuffer.js',
+          '../../src/js/harmony-simd.js',
         ],
         'code_stub_library_files': [
-          '../../src/macros.py',
+          '../../src/js/macros.py',
           '../../src/messages.h',
-          '../../src/code-stubs.js',
+          '../../src/js/code-stubs.js',
         ],
         'libraries_bin_file': '<(SHARED_INTERMEDIATE_DIR)/libraries.bin',
         'libraries_code_stub_bin_file': '<(SHARED_INTERMEDIATE_DIR)/libraries-code-stub.bin',
         'libraries_experimental_bin_file': '<(SHARED_INTERMEDIATE_DIR)/libraries-experimental.bin',
         'libraries_extras_bin_file': '<(SHARED_INTERMEDIATE_DIR)/libraries-extras.bin',
         'libraries_experimental_extras_bin_file': '<(SHARED_INTERMEDIATE_DIR)/libraries-experimental-extras.bin',
       },
       'actions': [
         {
           'action_name': 'js2c',
@@ skipping 210 matching lines @@
         }],
         ['want_separate_host_toolset==1', {
           'toolsets': ['host'],
         }, {
           'toolsets': ['target'],
         }],
       ],
     },
   ],
 }