No need in require_v8_scope flag any more.

tools/dom/scripts/generator.py

Index: tools/dom/scripts/generator.py
diff --git a/tools/dom/scripts/generator.py b/tools/dom/scripts/generator.py
index ca5e5399206433c7e53d7c43680ccf66f3058675..9ebd03a02f621799aa61ea770c3317c595f4abe8 100644
--- a/tools/dom/scripts/generator.py
+++ b/tools/dom/scripts/generator.py
@@ -813,9 +813,6 @@ class IDLTypeInfo(object):
   def vector_to_dart_template_parameter(self):
     return self.bindings_class()
 
-  def requires_v8_scope(self):
-    return self._data.requires_v8_scope
-
   def to_native_info(self, idl_node, interface_name):
     cls = self.bindings_class()
 
@@ -1084,7 +1081,6 @@ class TypeData(object):
                conversion_includes=None,
                webcore_getter_name='getAttribute',
                webcore_setter_name='setAttribute',
-               requires_v8_scope=False,
                item_type=None, suppress_interface=False, is_typed_array=False):
     self.clazz = clazz
     self.dart_type = dart_type
@@ -1096,7 +1092,6 @@ class TypeData(object):
     self.conversion_includes = conversion_includes
     self.webcore_getter_name = webcore_getter_name
     self.webcore_setter_name = webcore_setter_name
-    self.requires_v8_scope = requires_v8_scope
     self.item_type = item_type
     self.suppress_interface = suppress_interface
     self.is_typed_array = is_typed_array
@@ -1130,7 +1125,7 @@ _idl_type_registry = {
     'float': TypeData(clazz='Primitive', dart_type='num', native_type='double'),
     'double': TypeData(clazz='Primitive', dart_type='num'),
 
-    'any': TypeData(clazz='Primitive', dart_type='Object', native_type='ScriptValue', requires_v8_scope=True),
+    'any': TypeData(clazz='Primitive', dart_type='Object', native_type='ScriptValue'),
     'Array': TypeData(clazz='Primitive', dart_type='List'),
     'custom': TypeData(clazz='Primitive', dart_type='dynamic'),
     'Date': TypeData(clazz='Primitive', dart_type='Date', native_type='double'),
@@ -1138,7 +1133,7 @@ _idl_type_registry = {
     'DOMString': TypeData(clazz='Primitive', dart_type='String', native_type='String'),
     # TODO(vsm): This won't actually work until we convert the Map to
     # a native JS Map for JS DOM.
-    'Dictionary': TypeData(clazz='Primitive', dart_type='Map', requires_v8_scope=True),
+    'Dictionary': TypeData(clazz='Primitive', dart_type='Map'),
     # TODO(sra): Flags is really a dictionary: {create:bool, exclusive:bool}
     # http://dev.w3.org/2009/dap/file-system/file-dir-sys.html#the-flags-interface
     'Flags': TypeData(clazz='Primitive', dart_type='Object'),