Fixed more sdk/lib issues

tools/dom/scripts/dartgenerator.py

Index: tools/dom/scripts/dartgenerator.py
diff --git a/tools/dom/scripts/dartgenerator.py b/tools/dom/scripts/dartgenerator.py
index 5adbe3a8264b713bc77d310fc399bc52dbfa62bc..e3e96257a7836ce88c7adb378bd6972bcf8fd90d 100755
--- a/tools/dom/scripts/dartgenerator.py
+++ b/tools/dom/scripts/dartgenerator.py
@@ -12,6 +12,7 @@ import os
 import re
 import shutil
 from generator import *
+from idlnode import IDLType
 
 _logger = logging.getLogger('dartgenerator')
 
@@ -245,10 +246,17 @@ class DartGenerator(object):
         if 'ScriptArguments' in call_with:
           operation.arguments.append(ARG)
 
-  # TODO(terry): Hack to remove 3rd arguments in setInterval/setTimeout.
-  def HackCleanupTimers(self, database):
+  def CleanupOperationArguments(self, database):
     for interface in database.GetInterfaces():
       for operation in interface.operations:
+        # TODO(terry): Hack to remove 3rd arguments in setInterval/setTimeout.
         if ((operation.id == 'setInterval' or operation.id == 'setTimeout') and \
             operation.arguments[0].type.id == 'any'):
           operation.arguments.pop(2)
+
+        # Massage any operation argument type that is IDLEnum to String.
+        for index, argument in enumerate(operation.arguments):
+          type_name = argument.type.id
+          if database.HasEnum(type_name):
+            operation.arguments[index].type = IDLType('DOMString')
+