Remove references to the v8-i18n extension in blink.

Source/core/core.gyp

Index: Source/core/core.gyp
diff --git a/Source/core/core.gyp b/Source/core/core.gyp
index 45ca9f28cd2f3a7a5bacf991947f54affe647367..0cfa2d523a5922f6295cac0c73ec8cadf553326f 100644
--- a/Source/core/core.gyp
+++ b/Source/core/core.gyp
@@ -40,9 +40,6 @@
   'variables': {
     'enable_wexit_time_destructors': 1,
 
-    # TODO: temporary variable until we've switched from v8-i18n to v8's i18n support.
-    'v8_enable_i18n_support%': 0,
-
     'webcore_include_dirs': [
       '../..',
       '..',
@@ -323,14 +320,6 @@
         '<(SHARED_INTERMEDIATE_DIR)/webkit/StyleBuilderFunctions.cpp',
       ],
       'conditions': [
-        ['v8_enable_i18n_support==0', {
-          'dependencies': [
-            '<(DEPTH)/third_party/v8-i18n/build/all.gyp:v8-i18n',
-          ],
-          'defines': [
-            'USE_I18N_EXTENSION',
-          ],
-        }],
         ['OS=="win" and component=="shared_library"', {
           'defines': [
             'USING_V8_SHARED',
@@ -994,11 +983,6 @@
         ['exclude', '(?<!Chromium)(CF|CG|Mac|OpenType|Win)\\.(cpp|mm?)$'],
       ],
       'conditions': [
-        ['v8_enable_i18n_support==0', {
-          'dependencies': [
-            '<(DEPTH)/third_party/v8-i18n/build/all.gyp:v8-i18n',
-          ],
-        }],
         # Shard this taret into parts to work around linker limitations.
         # on link time code generation builds.
         ['OS=="win" and buildtype=="Official"', {