Revert "Add ClassMirror.isAbstract to the API and VM implementation."

sdk/lib/_internal/lib/js_mirrors.dart

 // Copyright (c) 2013, 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.
 
 library dart._js_mirrors;
 
 import 'dart:async';
 
 import 'dart:collection' show
     UnmodifiableListView;
@@ skipping 1128 matching lines @@
 
   List<ClassMirror> get superinterfaces {
     if (_cachedSuperinterfaces != null) return _cachedSuperinterfaces;
     return _cachedSuperinterfaces = _class._getSuperinterfacesWithOwner(this);
   }
 
   bool get isPrivate => _class.isPrivate;
 
   bool get isTopLevel => _class.isTopLevel;
 
-  bool get isAbstract => _class.isAbstract;
-
   SourceLocation get location => _class.location;
 
   MirrorSystem get mirrors => _class.mirrors;
 
   Symbol get qualifiedName => _class.qualifiedName;
 
   bool get hasReflectedType => true;
 
   Type get reflectedType => createRuntimeType(_mangledName);
 
@@ skipping 397 matching lines @@
       => throw new UnimplementedError();
 
   // TODO(ahe): Implement this.
   Map<Symbol, MethodMirror> get staticMembers => throw new UnimplementedError();
 
   // TODO(ahe): Implement this.
   ClassMirror get mixin => throw new UnimplementedError();
 
   // TODO(ahe): Implement this.
   Function operator [](Symbol name) => throw new UnimplementedError();
-
-  bool get isAbstract => throw new UnimplementedError();
 }
 
 class JsVariableMirror extends JsDeclarationMirror implements VariableMirror {
 
   // TODO(ahe): The values in these fields are virtually untested.
   final String _jsName;
   final bool isFinal;
   final bool isStatic;
   final _metadataFunction;
   final DeclarationMirror _owner;
@@ skipping 487 matching lines @@
   bool get _hasArguments => JS('bool', '"args" in #', _typeData);
   List get _arguments => JS('JSExtendableArray', '#.args', _typeData);
 
   bool get _hasOptionalArguments => JS('bool', '"opt" in #', _typeData);
   List get _optionalArguments => JS('JSExtendableArray', '#.opt', _typeData);
 
   bool get _hasNamedArguments => JS('bool', '"named" in #', _typeData);
   get _namedArguments => JS('=Object', '#.named', _typeData);
   bool get isOriginalDeclaration => true;
 
-  bool get isAbstract => false;
-
   TypeMirror get returnType {
     if (_cachedReturnType != null) return _cachedReturnType;
     if (_isVoid) return _cachedReturnType = JsMirrorSystem._voidType;
     if (!_hasReturnType) return _cachedReturnType = JsMirrorSystem._dynamicType;
     return _cachedReturnType =
         typeMirrorFromRuntimeTypeRepresentation(owner, _returnType);
   }
 
   List<ParameterMirror> get parameters {
     if (_cachedParameters != null) return _cachedParameters;
@@ skipping 300 matching lines @@
   void operator []=(K key, V value) => _throw();
 
   V putIfAbsent(K key, V ifAbsent()) { _throw(); }
 
   void addAll(Map<K, V> other) => _throw();
 
   V remove(K key) { _throw(); }
 
   void clear() => _throw();
 }