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

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

Index: pkg/compiler/lib/src/tree_ir/tree_ir_builder.dart
diff --git a/pkg/compiler/lib/src/tree_ir/tree_ir_builder.dart b/pkg/compiler/lib/src/tree_ir/tree_ir_builder.dart
index 2cf117256d297e5931e77e8e0916c9460e0b6c97..3a017d9554500baed75930f21cb5918d22ec2264 100644
--- a/pkg/compiler/lib/src/tree_ir/tree_ir_builder.dart
+++ b/pkg/compiler/lib/src/tree_ir/tree_ir_builder.dart
@@ -403,9 +403,11 @@ class Builder extends cps_ir.Visitor<Node> {
     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);
   }