Encode super calls via extra properties on prototypes.

sdk/lib/_internal/compiler/implementation/js_emitter/old_emitter/class_emitter.dart

Index: sdk/lib/_internal/compiler/implementation/js_emitter/old_emitter/class_emitter.dart
diff --git a/sdk/lib/_internal/compiler/implementation/js_emitter/old_emitter/class_emitter.dart b/sdk/lib/_internal/compiler/implementation/js_emitter/old_emitter/class_emitter.dart
index 13e2df190681008572bc6c6b58a45d41942953b3..f97c49845ec566bd2ffe88b97a62d84f100a019a 100644
--- a/sdk/lib/_internal/compiler/implementation/js_emitter/old_emitter/class_emitter.dart
+++ b/sdk/lib/_internal/compiler/implementation/js_emitter/old_emitter/class_emitter.dart
@@ -43,6 +43,7 @@ class ClassEmitter extends CodeEmitterHelper {
     emitFields(classElement, builder, superName, onlyForRti: onlyForRti);
     emitClassGettersSetters(classElement, builder, onlyForRti: onlyForRti);
     emitInstanceMembers(classElement, builder, onlyForRti: onlyForRti);
+    emitAliasedSuperMembers(classElement, builder, onlyForRti: onlyForRti);
     emitter.typeTestEmitter.emitIsTests(classElement, builder);
     if (additionalProperties != null) {
       additionalProperties.forEach(builder.addProperty);
@@ -286,6 +287,19 @@ class ClassEmitter extends CodeEmitterHelper {
     }
   }
 
+  void emitAliasedSuperMembers(ClassElement classElement,
+                               ClassBuilder builder,
+                               {bool onlyForRti: false}) {
+    if (onlyForRti) return;
+    Set<Element> aliases = backend.getAliasedSuperMembers(classElement);
+
+    for (Element alias in aliases) {
+      String newProperty = backend.namer.getNameOfAliasedSuperMember(alias);
+      String target = backend.namer.getNameOfMember(alias);
+      builder.addAliasedSuperMethod("$newProperty:$target");
+    }
+  }
+
   void emitClassBuilderWithReflectionData(String className,
                                           ClassElement classElement,
                                           ClassBuilder classBuilder,