Record the dependency of a implicit constructor to its superclass.

sdk/lib/_internal/compiler/implementation/resolution/members.dart

Index: sdk/lib/_internal/compiler/implementation/resolution/members.dart
diff --git a/sdk/lib/_internal/compiler/implementation/resolution/members.dart b/sdk/lib/_internal/compiler/implementation/resolution/members.dart
index 51a468952ef8fb65b1469bf056f39ae43fe1162e..62ecbaff8584d6df75ccdcc860e2723127dc2e7d 100644
--- a/sdk/lib/_internal/compiler/implementation/resolution/members.dart
+++ b/sdk/lib/_internal/compiler/implementation/resolution/members.dart
@@ -453,6 +453,7 @@ class ResolverTask extends CompilerTask {
       }
       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
@@ -460,11 +461,13 @@ class ResolverTask extends CompilerTask {
           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);
@@ -1377,7 +1380,8 @@ class InitializerResolver {
                                        functionNode,
                                        className,
                                        constructorSelector);
-
+      visitor.compiler.resolverWorld
+         .registerImplicitSuperCall(visitor.mapping, calledConstructor);
       visitor.world.registerStaticUse(calledConstructor);
     }
   }