Record the dependency of a implicit constructor to its superclass.

sdk/lib/_internal/compiler/implementation/universe/universe.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library universe;
 
 import '../elements/elements.dart';
 import '../dart2jslib.dart';
 import '../dart_types.dart';
 import '../types/types.dart';
@@ skipping 84 matching lines @@
   }
 
   DartType registerIsCheck(DartType type, Compiler compiler) {
     type = type.unalias(compiler);
     // Even in checked mode, type annotations for return type and argument
     // types do not imply type checks, so there should never be a check
     // against the type variable of a typedef.
     isChecks.add(type);
     return type;
   }
+
+  void registerImplicitSuperCall(TreeElements elements,

[karlklose, 2014/03/31 14:10:15]

This should be recorded in the world, because it is a global property and does
not change from resolution to codegen.

[sigurdm, 2014/03/31 14:27:00]

Done.

+                                 FunctionElement superConstructor) {
+    elements.otherDependencies.add(superConstructor);
+  }
 }
 
 class SelectorKind {
   final String name;
   final int hashCode;
   const SelectorKind(this.name, this.hashCode);
 
   static const SelectorKind GETTER = const SelectorKind('getter', 0);
   static const SelectorKind SETTER = const SelectorKind('setter', 1);
   static const SelectorKind CALL = const SelectorKind('call', 2);
@@ skipping 561 matching lines @@
   }
 
   Selector extendIfReachesAll(Compiler compiler) {
     bool canReachAll = compiler.enabledInvokeOn
         && mask.needsNoSuchMethodHandling(this, compiler);
     return canReachAll
         ? new TypedSelector(compiler.typesTask.dynamicType, this)
         : this;
   }
 }