Add StaticUse for more precise registration of statically known element use.

pkg/compiler/lib/src/resolution/access_semantics.dart

 // Copyright (c) 2015, 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.
 
 /**
  * Code for classifying the semantics of identifiers appearing in a Dart file.
  */
 library dart2js.access_semantics;
 
 import '../constants/expressions.dart';
@@ skipping 162 matching lines @@
   SUPER_FIELD_SETTER,
   /// Read from a superclass getter and write to a superclass setter.
   SUPER_GETTER_SETTER,
   /// Read from a superclass method (closurize) and write to a superclass
   /// setter.
   SUPER_METHOD_SETTER,
   /// Read from a superclass getter and write to a superclass field.
   SUPER_GETTER_FIELD,
 
   /// Read from a superclass where the getter is unresolved.
+  // TODO(johnniwinther): Use [AccessKind.SUPER_GETTER] when the erroneous
+  // element is no longer needed.
   UNRESOLVED_SUPER_GETTER,
   /// Read from a superclass getter and write to an unresolved setter.
+  // TODO(johnniwinther): Use [AccessKind.SUPER_SETTER] when the erroneous
+  // element is no longer needed.
   UNRESOLVED_SUPER_SETTER,
 }
 
 /**
  * Data structure used to classify the semantics of a property access or method
  * or function invocation.
  */
 abstract class AccessSemantics {
   /**
    * The kind of access.
@@ skipping 334 matching lines @@
 
   RedirectingFactoryConstructorAccessSemantics(
       ConstructorAccessKind kind,
       Element element,
       DartType type,
       this.effectiveTargetSemantics)
       : super(kind, element, type);
 }