Remove KernelAstAdapter.getNativeBehavior

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:js_runtime/shared/embedded_names.dart';
 import 'package:kernel/ast.dart' as ir;
 
 import '../closure.dart';
 import '../common.dart';
 import '../compiler.dart';
@@ skipping 262 matching lines @@
       {bool isContinueTarget: false}) {
     return _jumpTargets.putIfAbsent(node, () {
       if (node is ir.LabeledStatement && _jumpTargets.containsKey(node.body)) {
         return _jumpTargets[node.body];
       }
       return new KernelJumpTarget(node, this,
           makeContinueLabel: isContinueTarget);
     });
   }
 
-  native.NativeBehavior getNativeBehavior(ir.Node node) {
-    return elements.getNativeData(getNode(node));
-  }
-
   js.Name getNameForJsGetName(ir.Node argument, ConstantValue constant) {
     int index = _extractEnumIndexFromConstantValue(
         constant, _compiler.commonElements.jsGetNameEnum);
     if (index == null) return null;
     return _backend.namer
         .getNameForJsGetName(getNode(argument), JsGetName.values[index]);
   }
 
   js.Template getJsBuiltinTemplate(ConstantValue constant) {
     int index = _extractEnumIndexFromConstantValue(
@@ skipping 392 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);
   }
 }