Add forEach() to CSSVariablesMap

Source/bindings/scripts/v8_utilities.py

 # Copyright (C) 2013 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 10 matching lines @@
 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 # FIXME: eliminate this file if possible
 
+import re
 import v8_types
 
 ACRONYMS = ['CSS', 'HTML', 'IME', 'JS', 'SVG', 'URL', 'WOFF', 'XML', 'XSLT']
 
 
 # FIXME: these could be merged as implemented_as_cpp_name
 def cpp_class_name(interface):
     return interface.extended_attributes.get('ImplementedAs', interface.name)
 
 
@@ skipping 33 matching lines @@
     """
     for acronym in ACRONYMS:
         if name.startswith(acronym):
             name.replace(acronym, acronym.lower())
             return name
     return name[0].lower() + name[1:]
 
 
 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)