Added ThisVariable in scoping and the captured scope of initialized fields.

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 '../closure.dart' show BoxLocal;
 import '../common.dart';
@@ skipping 1005 matching lines @@
 
   @override
   native.BehaviorBuilder get nativeBehaviorBuilder =>
       _nativeBehaviorBuilder ??= new KernelBehaviorBuilder(commonElements);
 
   ResolutionImpact computeWorldImpact(KMember member) {
     return buildKernelImpact(
         _memberData[member.memberIndex].definition.node, this);
   }
 
-  ClosureModel computeClosureModel(KMember member) {
+  ScopeModel computeScopeModel(KMember member) {
     ir.Member node = _memberData[member.memberIndex].definition.node;
-    return KernelClosureAnalysis.computeClosureModel(member, node);
+    return KernelClosureAnalysis.computeScopeModel(member, node);
   }
 
   /// Returns the kernel [ir.Procedure] node for the [method].
   ir.Procedure _lookupProcedure(KFunction method) {
     return _memberData[method.memberIndex].definition.node;
   }
 
   Iterable<ConstantValue> _getClassMetadata(KClass cls) {
     return _classData[cls.classIndex].getMetadata(this);
   }
@@ skipping 1088 matching lines @@
   ///
   /// These names are not used in generated code, just as element name.
   String _getClosureVariableName(String name, int id) {
     return "_captured_${name}_$id";
   }
 
   String getDeferredUri(ir.LibraryDependency node) {
     throw new UnimplementedError('JsKernelToElementMap.getDeferredUri');
   }
 }