Strip unused functionality from dart:html and fix strong mode errors. Switch from blacklisting pure…

tools/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 logging
@@ skipping 175 matching lines @@
       blinkClass = DeriveQualifiedName(
         "_blink", DeriveBlinkClassName(interface_name))
       blinkInstance = DeriveQualifiedName(blinkClass, "instance")
       return DeriveQualifiedName(blinkInstance, name + "_")
 
   def NativeSpec(self):
     return ''
 
   def StartInterface(self, members_emitter):
     # Create emitters for c++ implementation.
-    if not IsPureInterface(self._interface.id) and \
+    if not IsPureInterface(self._interface.id, self._database) and \
         not IsCustomType(self._interface.id):
       self._cpp_header_emitter = self._cpp_library_emitter.CreateHeaderEmitter(
         self._interface.id,
         self._renamer.GetLibraryName(self._interface))
       self._cpp_impl_emitter = \
         self._cpp_library_emitter.CreateSourceEmitter(self._interface.id)
     else:
       self._cpp_header_emitter = emitter.Emitter()
       self._cpp_impl_emitter = emitter.Emitter()
 
@@ skipping 737 matching lines @@
         actuals = ", ".join(['this'] + parameters)
     else:
         formals = ", ".join(parameters)
         actuals = ", ".join(parameters)
 
     if not emit_to_native:
         caller_emitter = self._members_emitter
         full_dart_name = \
             self.DeriveQualifiedBlinkName(self._interface.id,
                                           dart_native_name)
-        if IsPureInterface(self._interface.id):
+        if IsPureInterface(self._interface.id, self._database):
             caller_emitter.Emit(
                 '\n'
                 '  $METADATA$DART_DECLARATION;\n',
                 METADATA=metadata,
                 DART_DECLARATION=dart_declaration)
         else:
             emit_template = '''
   $METADATA$DART_DECLARATION => $DART_NAME($ACTUALS);
   '''
             if output_conversion and not dictionary_return:
@@ skipping 283 matching lines @@
 
 def _IsCustom(op_or_attr):
   assert(isinstance(op_or_attr, IDLMember))
   return 'Custom' in op_or_attr.ext_attrs or 'DartCustom' in op_or_attr.ext_attrs
 
 def _IsCustomValue(op_or_attr, value):
   if _IsCustom(op_or_attr):
     return op_or_attr.ext_attrs.get('Custom') == value \
            or op_or_attr.ext_attrs.get('DartCustom') == value
   return False