Handle local functions in kernel_impact.

pkg/compiler/lib/src/kernel/kernel_debug.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.
 
 /// Helper for debug Kernel nodes.
 
 library kernel.debug;
 
 import 'package:kernel/kernel.dart';
 import 'package:kernel/visitor.dart';
@@ skipping 18 matching lines @@
   void visitName(Name node) {
     openAndCloseNode(node, '${node.runtimeType}',
         {'name': node.name, 'library': node.library?.name});
   }
 
   @override
   void visitIntLiteral(IntLiteral node) {
     openAndCloseNode(node, '${node.runtimeType}', {'value': '${node.value}'});
   }
 
+  @override
+  void visitVariableGet(VariableGet node) {
+    openAndCloseNode(
+        node, '${node.runtimeType}', {'variable': '${node.variable}'});
+  }
+
+  @override
+  void visitVariableDeclaration(VariableDeclaration node) {
+    openNode(node, '${node.runtimeType}', {
+      'name': '${node.name}',
+      'isFinal': '${node.isFinal}',
+      'isConst': '${node.isConst}'
+    });
+    node.visitChildren(this);
+    closeNode();
+  }
+
   /// Pretty-prints given node tree into string.
   static String prettyPrint(Node node) {
     var p = new DebugPrinter();
     node.accept(p);
     return p.sb.toString();
   }
 }