Add forEach() to CSSVariablesMap

Source/bindings/scripts/v8_utilities.py

Index: Source/bindings/scripts/v8_utilities.py
diff --git a/Source/bindings/scripts/v8_utilities.py b/Source/bindings/scripts/v8_utilities.py
index 93b85ab2d05d7fd043ebc4e01e86cab1b3244395..1bd258e42c05546bc8b5beb85cc72fa8001cc89d 100644
--- a/Source/bindings/scripts/v8_utilities.py
+++ b/Source/bindings/scripts/v8_utilities.py
@@ -28,6 +28,7 @@
 
 # FIXME: eliminate this file if possible
 
+import re
 import v8_types
 
 ACRONYMS = ['CSS', 'HTML', 'IME', 'JS', 'SVG', 'URL', 'WOFF', 'XML', 'XSLT']
@@ -81,3 +82,16 @@ def uncapitalize(name):
 
 def v8_class_name(interface):
     return v8_types.v8_type(interface.name)
+
+
+def has_extended_attribute_value(extended_attributes, key, value):
+    return key in extended_attributes and value in extended_attribute_values(extended_attributes, key)
+
+
+def extended_attribute_values(extended_attributes, key):
+    if key not in extended_attributes:
+        return None
+    values_string = extended_attributes[key]
+    if not values_string:
+        return []
+    return re.split('[|&]', values_string)