Fix the locals lookup of variables and partial implementation of boxing of variables.

pkg/compiler/lib/src/ssa/builder_kernel.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 '../common/codegen.dart' show CodegenRegistry;
 import '../common/names.dart';
@@ skipping 2201 matching lines @@
 
   @override
   void visitVariableGet(ir.VariableGet variableGet) {
     ir.VariableDeclaration variable = variableGet.variable;
     HInstruction letBinding = letBindings[variable];
     if (letBinding != null) {
       stack.add(letBinding);
       return;
     }
 
-    Local local = localsMap.getLocalVariable(variableGet.variable);
+    Local local = localsMap.getLocalVariable(variableGet.variable,
+        isClosureCallMethod:
+            _elementMap.getMemberDefinition(targetElement).kind ==
+                MemberKind.closureCall);
     stack.add(localsHandler.readLocal(local));
   }
 
   @override
   void visitPropertySet(ir.PropertySet propertySet) {
     propertySet.receiver.accept(this);
     HInstruction receiver = pop();
     propertySet.value.accept(this);
     HInstruction value = pop();
 
@@ skipping 1430 matching lines @@
     enterBlock.setBlockFlow(
         new HTryBlockInformation(
             kernelBuilder.wrapStatementGraph(bodyGraph),
             exception,
             kernelBuilder.wrapStatementGraph(catchGraph),
             kernelBuilder.wrapStatementGraph(finallyGraph)),
         exitBlock);
     kernelBuilder.inTryStatement = previouslyInTryStatement;
   }
 }