Handle super-method invocations in CPS->JS backend.

pkg/compiler/lib/src/tree_ir/tree_ir_builder.dart

 // Copyright (c) 2014, 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 tree_ir_builder;
 
 import '../dart2jslib.dart' as dart2js;
 import '../dart_types.dart';
 import '../elements/elements.dart';
 import '../cps_ir/cps_ir_nodes.dart' as cps_ir;
@@ skipping 385 matching lines @@
     return continueWithExpression(node.continuation, invoke);
   }
 
   Statement visitInvokeMethod(cps_ir.InvokeMethod node) {
     Expression invoke = new InvokeMethod(getVariableReference(node.receiver),
                                          node.selector,
                                          translateArguments(node.arguments));
     return continueWithExpression(node.continuation, invoke);
   }
 
-  Statement visitInvokeSuperMethod(cps_ir.InvokeSuperMethod node) {
+  Statement visitInvokeMethodDirectly(cps_ir.InvokeMethodDirectly node) {
+    Expression receiver = getVariableReference(node.receiver);
     List<Expression> arguments = translateArguments(node.arguments);
-    Expression invoke = new InvokeSuperMethod(node.selector, arguments);
+    Expression invoke = new InvokeMethodDirectly(receiver, node.target,
+        node.selector, arguments);
     return continueWithExpression(node.continuation, invoke);
   }
 
   Statement visitConcatenateStrings(cps_ir.ConcatenateStrings node) {
     List<Expression> arguments = translateArguments(node.arguments);
     Expression concat = new ConcatenateStrings(arguments);
     return continueWithExpression(node.continuation, concat);
   }
 
   Statement continueWithExpression(cps_ir.Reference continuation,
@@ skipping 151 matching lines @@
     // visited.
     internalError(CURRENT_ELEMENT_SPANNABLE, 'Unexpected IR node: $node.');
     return null;
   }
 
   Expression visitIsTrue(cps_ir.IsTrue node) {
     return getVariableReference(node.value);
   }
 }