Ignore attributes and methods with CheckSecurityForNode.

client/dom/scripts/systemnative.py

Index: client/dom/scripts/systemnative.py
diff --git a/client/dom/scripts/systemnative.py b/client/dom/scripts/systemnative.py
index 13a9d92cd5af7da1d9cf9662b455687368e9eacc..208f96ccb8d4120a34ed2741d7c769b4447ca31d 100644
--- a/client/dom/scripts/systemnative.py
+++ b/client/dom/scripts/systemnative.py
@@ -377,6 +377,10 @@ class NativeImplementationGenerator(systemwrapping.WrappingInterfaceGenerator):
     if (getter or setter).type.id == 'EventListener':
       return
 
+    if 'CheckSecurityForNode' in (getter or setter).ext_attrs:
+      # FIXME: exclude from interface as well.
+      return
+
     # FIXME: support 'ImplementedBy'.
     if 'ImplementedBy' in (getter or setter).ext_attrs:
       return
@@ -482,6 +486,10 @@ class NativeImplementationGenerator(systemwrapping.WrappingInterfaceGenerator):
       info: An OperationInfo object.
     """
 
+    if 'CheckSecurityForNode' in info.overloads[0].ext_attrs:
+      # FIXME: exclude from interface as well.
+      return
+
     if 'Custom' in info.overloads[0].ext_attrs:
       parameters = info.ParametersImplementationDeclaration()
       dart_declaration = '%s %s(%s)' % (info.type_name, info.name, parameters)