Add NativeDataResolver

pkg/compiler/lib/src/common/backend_api.dart

 // 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.
 
 library dart2js.backend_api;
 
 import '../common.dart';
 import '../common/codegen.dart' show CodegenImpact;
 import '../common/resolution.dart' show ResolutionImpact;
 import '../constants/expressions.dart' show ConstantExpression;
@@ skipping 158 matching lines @@
   /// `Interceptor` class.
   ClassEntity get interceptorClass;
 
   /// Returns `true` if [element] is a default implementation of `Object.==`.
   /// This either `Object.==`, `Intercepter.==` or `Null.==`.
   bool isDefaultEqualityImplementation(MemberEntity element);
 
   /// Returns `true` if [cls] is a native class.
   bool isNativeClass(ClassEntity element);
 
-  /// Returns `true` if [element] is a native member of a native class.
-  bool isNativeMember(MemberEntity element);
-
   /// Returns the type of the constant map implementation for a const map
   /// literal of [sourceType]. If [hasProtoKey] the map contains key of value
   /// '__proto__' and if [onlyStringKeys] all keys are string constants.
   InterfaceType getConstantMapTypeFor(InterfaceType sourceType,
       {bool hasProtoKey: false, bool onlyStringKeys: false});
 
   /// Returns the type of the constant symbol implementation class.
   InterfaceType get symbolType;
 
   /// Returns the field of the constant symbol implementation class that holds
   /// its internal name.
   FieldEntity get symbolField;
 }