Allow access to super fields inside a closure.

lib/compiler/implementation/js_backend/emitter.dart

 // Copyright (c) 2012, 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.
 
 /**
  * A function element that represents a closure call. The signature is copied
  * from the given element.
  */
 class ClosureInvocationElement extends FunctionElement {
   ClosureInvocationElement(SourceString name,
@@ skipping 749 matching lines @@
 
     bool hasOptionalParameters = member.optionalParameterCount(compiler) != 0;
     int parameterCount = member.parameterCount(compiler);
 
     String closureClass =
         hasOptionalParameters ? null : boundClosureCache[parameterCount];
     if (closureClass === null) {
       // Either the class was not cached yet, or there are optional parameters.
       // Create a new closure class.
       SourceString name = const SourceString("BoundClosure");
-      ClassElement closureClassElement =
-          new ClosureClassElement(name, compiler, member.getCompilationUnit());
+      ClassElement closureClassElement = new ClosureClassElement(
+          name, compiler, member, member.getCompilationUnit());
       String mangledName = namer.getName(closureClassElement);
       String superName = namer.getName(closureClassElement.superclass);
       needsClosureClass = true;
 
       // Define the constructor with a name so that Object.toString can
       // find the class name of the closure class.
       boundClosureBuffer.add("""
 $classesCollector.$mangledName = {'':
  ['self', 'target'],
  'super': '$superName',
@@ skipping 417 matching lines @@
         sourceName = token.slowToString();
       }
       int totalOffset = bufferOffset + offset;
       sourceMapBuilder.addMapping(
           sourceFile, token.charOffset, sourceName, totalOffset);
     });
   }
 }
 
 typedef void DefineMemberFunction(String invocationName, CodeBuffer definition);