Move builtin JavaScript sources into own directory.

tools/gyp/v8.gyp

Index: tools/gyp/v8.gyp
diff --git a/tools/gyp/v8.gyp b/tools/gyp/v8.gyp
index a11603c1808bc0458a7e55fb312b52e7b8740290..c99495adbaa1b8b1e86615dc8967c5125c479424 100644
--- a/tools/gyp/v8.gyp
+++ b/tools/gyp/v8.gyp
@@ -1805,7 +1805,7 @@
         ['v8_enable_i18n_support==1', {
           'variables': {
             'i18n_library_files': [
-              '../../src/i18n.js',
+              '../../src/js/i18n.js',
             ],
           },
         }, {
@@ -1816,59 +1816,59 @@
       ],
       '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',