Import the v8-i18n extension into v8

tools/gyp/v8.gyp

Index: tools/gyp/v8.gyp
diff --git a/tools/gyp/v8.gyp b/tools/gyp/v8.gyp
index eedd5ea080381cd11a28d285b57d138fb4e6ac5e..d701e941065ea5eb6aa5f18177e467fd2da65b81 100644
--- a/tools/gyp/v8.gyp
+++ b/tools/gyp/v8.gyp
@@ -129,6 +129,11 @@
             ],
           },
         }],
+        ['v8_enable_i18n_support==1', {
+          'sources': [
+            '<(SHARED_INTERMEDIATE_DIR)/i18n-libraries.cc',
+          ],
+        }],
       ],
       'dependencies': [
         'v8_base.<(v8_target_arch)',
@@ -192,6 +197,11 @@
             'V8_SHARED',
           ],
         }],
+        ['v8_enable_i18n_support==1', {
+          'sources': [
+            '<(SHARED_INTERMEDIATE_DIR)/i18n-libraries.cc',
+          ],
+        }],
       ]
     },
     {
@@ -779,6 +789,27 @@
             '<(SHARED_INTERMEDIATE_DIR)/debug-support.cc',
           ]
         }],
+        ['v8_enable_i18n_support==1', {
+          'sources': [
+            '../../src/extensions/i18n/break-iterator.cc',
+            '../../src/extensions/i18n/break-iterator.h',
+            '../../src/extensions/i18n/collator.cc',
+            '../../src/extensions/i18n/collator.h',
+            '../../src/extensions/i18n/date-format.cc',
+            '../../src/extensions/i18n/date-format.h',
+            '../../src/extensions/i18n/i18n-extension.cc',
+            '../../src/extensions/i18n/i18n-extension.h',
+            '../../src/extensions/i18n/i18n-utils.cc',
+            '../../src/extensions/i18n/i18n-utils.h',
+            '../../src/extensions/i18n/locale.cc',
+            '../../src/extensions/i18n/locale.h',
+            '../../src/extensions/i18n/number-format.cc',
+            '../../src/extensions/i18n/number-format.h',
+          ],
+          'dependencies': [
+            '<(DEPTH)/third_party/icu/icu.gyp:*',
+          ]
+        }],
       ],
     },
     {
@@ -790,6 +821,26 @@
         }, {
           'toolsets': ['target'],
         }],
+        ['v8_enable_i18n_support==1', {
+          'actions': [{
+            'action_name': 'js2c_i18n',
+            'inputs': [
+              '../../tools/js2c.py',
+              '<@(i18n_library_files)',
+            ],
+            'outputs': [
+              '<(SHARED_INTERMEDIATE_DIR)/i18n-libraries.cc',
+            ],
+            'action': [
+              'python',
+              '../../tools/js2c.py',
+              '<@(_outputs)',
+              'I18N',
+              '<(v8_compress_startup_data)',
+              '<@(i18n_library_files)'
+            ],
+          }],
+        }],
       ],
       'variables': {
         'library_files': [
@@ -819,6 +870,18 @@
           '../../src/typedarray.js',
           '../../src/generator.js'
         ],
+        'i18n_library_files': [
+          '../../src/extensions/i18n/break-iterator.js',
+          '../../src/extensions/i18n/collator.js',
+          '../../src/extensions/i18n/date-format.js',
+          '../../src/extensions/i18n/footer.js',
+          '../../src/extensions/i18n/globals.js',
+          '../../src/extensions/i18n/header.js',
+          '../../src/extensions/i18n/i18n-utils.js',
+          '../../src/extensions/i18n/locale.js',
+          '../../src/extensions/i18n/number-format.js',
+          '../../src/extensions/i18n/overrides.js',
+        ],
       },
       'actions': [
         {