Removed DARTIUM codegen for IDLS (sdk/lib/dartium)

tools/dom/src/dartium_CustomElementSupport.dart

-// Copyright (c) 2014, 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.
-
-part of dart.dom.html;
-
-/// Dartium ElementUpgrader implementation.
-class _VMElementUpgrader implements ElementUpgrader {
-  final Type _type;
-  final Type _nativeType;
-  final String _extendsTag;
-
-  _VMElementUpgrader(Document document, Type type, String extendsTag)
-      : _type = type,
-        _extendsTag = extendsTag,
-        _nativeType = _validateCustomType(type).reflectedType {
-    if (extendsTag == null) {
-      if (_nativeType != HtmlElement) {
-        throw new UnsupportedError('Class must provide extendsTag if base '
-            'native class is not HtmlElement');
-      }
-    } else {
-      if (document.createElement(extendsTag).runtimeType != _nativeType) {
-        throw new UnsupportedError(
-            'extendsTag does not match base native class');
-      }
-    }
-  }
-
-  Element upgrade(element) {
-    // Only exact type matches are supported- cannot be a subclass.
-    if (element.runtimeType != _nativeType) {
-      throw new ArgumentError('element is not subclass of $_nativeType');
-    }
-    return _createCustomUpgrader(_type, element);
-  }
-}
-
-/// Validates that the custom type is properly formed-
-///
-/// * Is a user-defined class.
-/// * Has a created constructor with zero args.
-/// * Derives from an Element subclass.
-///
-/// Then returns the native base class.
-ClassMirror _validateCustomType(Type type) {
-  ClassMirror cls = reflectClass(type);
-  if (_isBuiltinType(cls)) {
-    throw new UnsupportedError('Invalid custom element from '
-        '${(cls.owner as LibraryMirror).uri}.');
-  }
-
-  var className = MirrorSystem.getName(cls.simpleName);
-  if (cls.isAbstract) {
-    throw new UnsupportedError('Invalid custom element '
-        'class $className is abstract.');
-  }
-
-  var createdConstructor = cls.declarations[new Symbol('$className.created')];
-  if (createdConstructor == null ||
-      createdConstructor is! MethodMirror ||
-      !createdConstructor.isConstructor) {
-    throw new UnsupportedError(
-        'Class is missing constructor $className.created');
-  }
-
-  if (createdConstructor.parameters.length > 0) {
-    throw new UnsupportedError(
-        'Constructor $className.created must take zero arguments');
-  }
-
-  Symbol objectName = reflectClass(Object).qualifiedName;
-  bool isRoot(ClassMirror cls) =>
-      cls == null || cls.qualifiedName == objectName;
-  Symbol elementName = reflectClass(HtmlElement).qualifiedName;
-  bool isElement(ClassMirror cls) =>
-      cls != null && cls.qualifiedName == elementName;
-  ClassMirror superClass = cls.superclass;
-  ClassMirror nativeClass = _isBuiltinType(superClass) ? superClass : null;
-  while (!isRoot(superClass) && !isElement(superClass)) {
-    superClass = superClass.superclass;
-    if (nativeClass == null && _isBuiltinType(superClass)) {
-      nativeClass = superClass;
-    }
-  }
-  return nativeClass;
-}
-
-bool _isBuiltinType(ClassMirror cls) {
-  // TODO(vsm): Find a less hackish way to do this.
-  LibraryMirror lib = cls.owner;
-  String libName = lib.uri.toString();
-  return libName.startsWith('dart:');
-}