Add equivalence check of NativeData and InterceptorData

pkg/compiler/lib/src/kernel/element_map_impl.dart

 // Copyright (c) 2017, 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.kernel.element_map;
 
 import 'package:kernel/ast.dart' as ir;
 
 import '../common.dart';
 import '../common/names.dart' show Identifiers;
@@ skipping 1305 matching lines @@
   }
 
   InterfaceType getMixinTypeForClass(KClass cls) {
     _KClassEnv env = elementMap._classEnvs[cls.classIndex];
     ir.Supertype mixedInType = env.cls.mixedInType;
     if (mixedInType == null) return null;
     return elementMap.createInterfaceType(
         mixedInType.classNode, mixedInType.typeArguments);
   }
 }
+
+class KernelNativeMemberResolver extends NativeMemberResolverBase {
+  final KernelToElementMapImpl elementMap;
+  final NativeBasicData nativeBasicData;
+  final NativeDataBuilder nativeDataBuilder;
+
+  KernelNativeMemberResolver(
+      this.elementMap, this.nativeBasicData, this.nativeDataBuilder);
+
+  @override
+  ElementEnvironment get elementEnvironment => elementMap.elementEnvironment;
+
+  @override
+  CommonElements get commonElements => elementMap.commonElements;
+
+  @override
+  native.NativeBehavior computeNativeFieldStoreBehavior(KField field) {
+    ir.Field node = elementMap._memberList[field.memberIndex].node;
+    return elementMap.getNativeBehaviorForFieldStore(node);
+  }
+
+  @override
+  native.NativeBehavior computeNativeFieldLoadBehavior(KField field,
+      {bool isJsInterop}) {
+    ir.Field node = elementMap._memberList[field.memberIndex].node;
+    return elementMap.getNativeBehaviorForFieldLoad(node,
+        isJsInterop: isJsInterop);
+  }
+
+  @override
+  native.NativeBehavior computeNativeMethodBehavior(KFunction function,
+      {bool isJsInterop}) {
+    ir.Member node = elementMap._memberList[function.memberIndex].node;
+    return elementMap.getNativeBehaviorForMethod(node,
+        isJsInterop: isJsInterop);
+  }
+
+  @override
+  bool isNativeMethod(KFunction function) {
+    ir.Member node = elementMap._memberList[function.memberIndex].node;
+    return node.isExternal &&
+        !elementMap.isForeignLibrary(node.enclosingLibrary);
+  }
+
+  @override
+  bool isJsInteropMember(MemberEntity element) {
+    // TODO(johnniwinther): Compute this.
+    return false;
+  }
+}