Redo "Revert "Encode super calls via extra properties on prototypes.""

pkg/compiler/lib/src/js_emitter/old_emitter/container_builder.dart

Index: pkg/compiler/lib/src/js_emitter/old_emitter/container_builder.dart
diff --git a/pkg/compiler/lib/src/js_emitter/old_emitter/container_builder.dart b/pkg/compiler/lib/src/js_emitter/old_emitter/container_builder.dart
index 6fa8fa44b0f86b69b7404c1edc2ad2e3489e6053..802887d9b73b5bb69d124378c73a37b1a6fa380f 100644
--- a/pkg/compiler/lib/src/js_emitter/old_emitter/container_builder.dart
+++ b/pkg/compiler/lib/src/js_emitter/old_emitter/container_builder.dart
@@ -414,7 +414,7 @@ class ContainerBuilder extends CodeEmitterHelper {
 
   void addMemberMethodFromInfo(MemberInfo info, ClassBuilder builder) {
     final FunctionElement member = info.member;
-    String name = info.name;
+    final String name = info.name;
     final FunctionSignature parameters = info.parameters;
     jsAst.Expression code = info.code;
     final bool needsStubs = info.needsStubs;
@@ -427,13 +427,6 @@ class ContainerBuilder extends CodeEmitterHelper {
 
     emitter.interceptorEmitter.recordMangledNameOfMemberMethod(member, name);
 
-    // If this member is called from a subclass via super, we have to add a
-    // renaming. This is encoded by using two names separated with a : as
-    // the property name.
-    if (backend.isAliasedSuperMember(member)) {
-      name = "$name:${namer.getNameOfAliasedSuperMember(member)}";
-    }
-
     if (!needStructuredInfo) {
       compiler.dumpInfoTask.registerElementAst(member,
           builder.addProperty(name, code));