Handle js interop members in impact computation.

pkg/compiler/lib/src/ssa/kernel_ast_adapter.dart

 // Copyright (c) 2016, 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.
 
 import 'package:kernel/ast.dart' as ir;
 
 import '../closure.dart';
 import '../common.dart';
 import '../compiler.dart';
 import '../constants/expressions.dart';
 import '../constants/values.dart';
 import '../common_elements.dart';
 import '../elements/elements.dart';
 import '../elements/entities.dart';
 import '../elements/jumps.dart';
 import '../elements/modelx.dart';
 import '../elements/resolution_types.dart';
 import '../elements/types.dart';
 import '../js_backend/js_backend.dart';
+import '../js_backend/native_data.dart';
 import '../kernel/element_map.dart';
 import '../kernel/element_map_mixins.dart';
 import '../kernel/kernel.dart';
 import '../native/native.dart' as native;
 import '../resolution/tree_elements.dart';
 import '../tree/tree.dart' as ast;
 import '../types/masks.dart';
 import '../types/types.dart';
 import '../universe/selector.dart';
 import '../world.dart';
@@ skipping 50 matching lines @@
     }
     for (LocalFunctionElement localFunction in kernel.localFunctions.keys) {
       _nodeToElement[kernel.localFunctions[localFunction]] = localFunction;
     }
     for (TypeVariableElement typeVariable in kernel.typeParameters.keys) {
       _nodeToElement[kernel.typeParameters[typeVariable]] = typeVariable;
     }
     _typeConverter = new DartTypeConverter(this);
   }
 
+  @override
+  NativeBasicData get nativeBasicData =>
+      _backend.frontendStrategy.nativeBasicData;
+
   void addProgram(ir.Program node) {
     throw new UnsupportedError('KernelAstAdapter.addProgram');
   }
 
   @override
   ConstantValue computeConstantValue(ConstantExpression constant,
       {bool requireConstant: true}) {
     _compiler.backend.constants.evaluate(constant);
     ConstantValue value =
         _compiler.backend.constants.getConstantValue(constant);
@@ skipping 610 matching lines @@
   TypeMask selectorTypeOf(Selector selector, TypeMask mask) {
     return TypeMaskFactory.inferredTypeForSelector(
         selector, mask, _globalInferenceResults);
   }
 
   TypeMask typeFromNativeBehavior(
       native.NativeBehavior nativeBehavior, ClosedWorld closedWorld) {
     return TypeMaskFactory.fromNativeBehavior(nativeBehavior, closedWorld);
   }
 }