Revert "Compute frontend/backend specific constants."

sdk/lib/_internal/compiler/implementation/elements/elements.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 elements;
 
 
 import '../tree/tree.dart';
 import '../util/util.dart';
 import '../resolution/resolution.dart';
@@ skipping 1022 matching lines @@
 abstract class TypeVariableElement extends Element implements TypedElement {
   /// The [type] defined by the type variable.
   TypeVariableType get type;
 
   /// The upper bound on the type variable. If not explicitly declared, this is
   /// `Object`.
   DartType get bound;
 }
 
 abstract class MetadataAnnotation implements Spannable {
-  /// The front-end constant of this metadata annotation.
   Constant get value;
   Element get annotatedElement;
   int get resolutionState;
   Token get beginToken;
   Token get endToken;
 
   // TODO(kasperl): Try to get rid of these.
   void set annotatedElement(Element value);
+  void set resolutionState(int value);
 
   MetadataAnnotation ensureResolved(Compiler compiler);
 }
 
 abstract class VoidElement extends Element {}
 
 /// An [Element] that has a type.
 abstract class TypedElement extends Element {
   DartType get type;
 }
@@ skipping 64 matching lines @@
   InterfaceType get declarer;
 
   /// Returns `true` if this member is static.
   bool get isStatic;
 
   /// Returns `true` if this member is a getter or setter implicitly declared
   /// by a field.
   bool get isDeclaredByField;
 }