Record the dependency of a implicit constructor to its superclass.

sdk/lib/_internal/compiler/implementation/resolution/members.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.
 
 part of resolution;
 
 abstract class TreeElements {
   Element get currentElement;
   Setlet<Node> get superUses;
 
@@ skipping 435 matching lines @@
       if (elements != null) {
         // TODO(karlklose): Remove the check for [isConstructor]. [elememts]
         // should never be non-null, not even for constructors.
         assert(invariant(element, element.isConstructor(),
             message: 'Non-constructor element $element '
                      'has already been analyzed.'));
         return elements;
       }
       if (element.isSynthesized) {
         if (isConstructor) {
+          TreeElements elements = _ensureTreeElements(element);
           Element target = element.targetConstructor;
           // Ensure the signature of the synthesized element is
           // resolved. This is the only place where the resolver is
           // seeing this element.
           element.computeSignature(compiler);
           if (!target.isErroneous()) {
             compiler.enqueuer.resolution.registerStaticUse(target);
+            compiler.resolverWorld.registerImplicitSuperCall(elements, target);
           }
+          return elements;
         } else {
           assert(element.isDeferredLoaderGetter());
+          return _ensureTreeElements(element);
         }
-        return _ensureTreeElements(element);
       }
       element.parseNode(compiler);
       element.computeSignature(compiler);
       if (element.isPatched) {
         FunctionElementX patch = element.patch;
         compiler.withCurrentElement(patch, () {
             patch.parseNode(compiler);
             patch.computeSignature(compiler);
         });
         checkMatchingPatchSignatures(element, patch);
@@ skipping 892 matching lines @@
 
       final String className = lookupTarget.name;
       final bool isImplicitSuperCall = true;
       verifyThatConstructorMatchesCall(constructor,
                                        calledConstructor,
                                        callToMatch,
                                        isImplicitSuperCall,
                                        functionNode,
                                        className,
                                        constructorSelector);
-
+      visitor.compiler.resolverWorld
+         .registerImplicitSuperCall(visitor.mapping, calledConstructor);
       visitor.world.registerStaticUse(calledConstructor);
     }
   }
 
   void verifyThatConstructorMatchesCall(
       FunctionElement caller,
       FunctionElement lookedupConstructor,
       Selector call,
       bool isImplicitSuperCall,
       Node diagnosticNode,
@@ skipping 3267 matching lines @@
   TreeElements _treeElements;
 
   bool get hasTreeElements => _treeElements != null;
 
   TreeElements get treeElements {
     assert(invariant(this, _treeElements !=null,
         message: "TreeElements have not been computed for $this."));
     return _treeElements;
   }
 }