Import the v8-i18n extension into v8

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index 09abe2978ed9ab7bf92814088e06e00540365253..dd0609833779e1097a29659cdf64f14fc343b4da 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -104,6 +104,10 @@
     # Interpreted regexp engine exists as platform-independent alternative
     # based where the regular expression is compiled to a bytecode.
     'v8_interpreted_regexp%': 0,
+
+    # Enable ECMAScript Internationalization API. Enabling this feature will
+    # add a dependency on the ICU library.
+    'v8_enable_i18n_support%': 0,
   },
   'target_defaults': {
     'conditions': [
@@ -125,6 +129,9 @@
       ['v8_interpreted_regexp==1', {
         'defines': ['V8_INTERPRETED_REGEXP',],
       }],
+      ['v8_enable_i18n_support==1', {
+        'defines': ['V8_I18N_SUPPORT',],
+      }],
       ['v8_target_arch=="arm"', {
         'defines': [
           'V8_TARGET_ARCH_ARM',