Do not split attributes on getters and setters in databasebuilder.

lib/dom/scripts/systemnative.py

 #!/usr/bin/python
 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 """This module provides shared functionality for the systems to generate
 native binding from the IDL database."""
 
 import emitter
 import os
@@ skipping 455 matching lines @@
           INDEX=len(node.arguments))
       arguments.extend(['scriptArguments', 'scriptCallStack'])
       return True
 
     return False
 
   def AddConstant(self, constant):
     # Constants are already defined on the interface.
     pass
 
-  def AddAttribute(self, getter, setter):
+  def AddAttribute(self, attribute):
+    getter = attribute
+    setter = attribute if not systembase.IsReadOnly(attribute) else None
     if 'CheckSecurityForNode' in (getter or setter).ext_attrs:
       # FIXME: exclude from interface as well.
       return
 
     dom_name = DartDomNameOfAttribute(getter or setter)
     html_getter_name = self._html_system.RenameInHtmlLibrary(
         self._interface.id, dom_name, 'get:', implementation_class=True)
     html_setter_name = self._html_system.RenameInHtmlLibrary(
         self._interface.id, dom_name, 'set:', implementation_class=True)
 
     if getter and html_getter_name:
       self._AddGetter(getter, html_getter_name)
     if setter and html_setter_name:
       self._AddSetter(setter, html_setter_name)
 
-  def AddSecondaryAttribute(self, interface, getter, setter):
-    self.AddAttribute(getter, setter)
+  def AddSecondaryAttribute(self, interface, attribute):
+    self.AddAttribute(attribute)
 
   def _AddGetter(self, attr, html_name):
     type_info = GetIDLTypeInfo(attr.type.id)
     dart_declaration = '%s get %s()' % (self._DartType(attr.type.id), html_name)
     is_custom = 'Custom' in attr.ext_attrs or 'CustomGetter' in attr.ext_attrs
     cpp_callback_name = self._GenerateNativeBinding(attr.id, 1,
         dart_declaration, 'Getter', is_custom)
     if is_custom:
       return
 
@@ skipping 479 matching lines @@
 
 def _IsArgumentOptionalInWebCore(argument):
   return IsOptional(argument) and not 'Callback' in argument.ext_attrs
 
 def _ToWebKitName(name):
   name = name[0].lower() + name[1:]
   name = re.sub(r'^(hTML|uRL|jS|xML|xSLT)', lambda s: s.group(1).lower(),
                 name)
   return re.sub(r'^(create|exclusive)', lambda s: 'is' + s.group(1).capitalize(),
                 name)