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

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

Index: sdk/lib/_internal/compiler/implementation/ir/ir_nodes.dart
diff --git a/sdk/lib/_internal/compiler/implementation/ir/ir_nodes.dart b/sdk/lib/_internal/compiler/implementation/ir/ir_nodes.dart
index e3650af17fefb429fe0197ae1f815d1b09e207b2..9b819fc826674ccf7d71027295174e75412bd111 100644
--- a/sdk/lib/_internal/compiler/implementation/ir/ir_nodes.dart
+++ b/sdk/lib/_internal/compiler/implementation/ir/ir_nodes.dart
@@ -315,6 +315,14 @@ class This extends Primitive {
   accept(Visitor visitor) => visitor.visitThis(this);
 }
 
+class Super extends Primitive {

[asgerf, 2014/06/23 10:55:17]

Again, I think it's better to have InvokeSuperMethod rather than a
pseudo-primitive that can only be used as receiver in InvokeMethod.

[sigurdm, 2014/06/24 09:23:08]

Done.

+  Super();
+
+  dart2js.Constant get constant => null;
+
+  accept(Visitor visitor) => visitor.visitSuper(this);
+}
+
 class LiteralList extends Primitive {
   /// The List type being created; this is not the type argument.
   final GenericType type;
@@ -415,6 +423,7 @@ abstract class Visitor<T> {
   T visitLiteralMap(LiteralMap node) => visitPrimitive(node);
   T visitConstant(Constant node) => visitPrimitive(node);
   T visitThis(This node) => visitPrimitive(node);
+  T visitSuper(Super node) => visitPrimitive(node);
   T visitInvokeConstConstructor(InvokeConstConstructor node) => visitPrimitive(node);
   T visitParameter(Parameter node) => visitPrimitive(node);
   T visitContinuation(Continuation node) => visitDefinition(node);