Add support for superSend to the new IR and dart backend.

sdk/lib/_internal/compiler/implementation/ir/ir_tracer.dart

Index: sdk/lib/_internal/compiler/implementation/ir/ir_tracer.dart
diff --git a/sdk/lib/_internal/compiler/implementation/ir/ir_tracer.dart b/sdk/lib/_internal/compiler/implementation/ir/ir_tracer.dart
index ed35780b4f8a1379ec63808848ce1ec2d5df48bf..5f48fd7265b79dc450460f4d882ee2cd19888492 100644
--- a/sdk/lib/_internal/compiler/implementation/ir/ir_tracer.dart
+++ b/sdk/lib/_internal/compiler/implementation/ir/ir_tracer.dart
@@ -119,6 +119,15 @@ class IRTracer extends TracerUtil implements ir.Visitor {
         "InvokeMethod $receiver $callName ($args) $kont");
   }
 
+  visitInvokeSuperMethod(ir.InvokeSuperMethod node) {
+    String dummy = names.name(node);
+    String callName = node.selector.name;
+    String args = node.arguments.map(formatReference).join(', ');
+    String kont = formatReference(node.continuation);
+    printStmt(dummy,
+        "InvokeSuperMethod $callName ($args) $kont");
+  }
+
   visitInvokeConstructor(ir.InvokeConstructor node) {
     String dummy = names.name(node);
     String callName;