Add metadata for type parameters (TypeVariableMirror).

runtime/lib/mirrors_impl.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.
 
 // VM-specific implementation of the dart:mirrors library.
 
 import "dart:collection";
 
 // These values are allowed to be passed directly over the wire.
 bool _isSimpleValue(var value) {
@@ skipping 751 matching lines @@
   List<ParameterMirror> _parameters = null;
   List<ParameterMirror> get parameters {
     if (_parameters == null) {
       _parameters = _FunctionTypeMirror_parameters(_reflectee);
     }
     return _parameters;
   }
 
   Map<Symbol, Mirror> get members => new Map<Symbol,Mirror>();
   Map<Symbol, MethodMirror> get constructors => new Map<Symbol,MethodMirror>();
-  final Map<Symbol, TypeVariableMirror> typeVariables = const {};
 
   String toString() => "FunctionTypeMirror on '${_n(simpleName)}'";
 
   MethodMirror _FunctionTypeMirror_call_method(reflectee)
       native "FunctionTypeMirror_call_method";
 
   static Type _FunctionTypeMirror_return_type(reflectee)
       native "FunctionTypeMirror_return_type";
 
   List<ParameterMirror> _FunctionTypeMirror_parameters(reflectee)
@@ skipping 57 matching lines @@
 
   TypeMirror _upperBound = null;
   TypeMirror get upperBound {
     if (_upperBound == null) {
       _upperBound =
           _Mirrors._reflectType(_TypeVariableMirror_upper_bound(_reflectee));
     }
     return _upperBound;
   }
 
-  List<InstanceMirror> get metadata {
-    throw new UnimplementedError(
-        'TypeVariableMirror.metadata is not implemented');
-  }
-
   bool get isOriginalDeclaration => true;
   ClassMirror get originalDeclaration => this;
 
   String toString() => "TypeVariableMirror on '${_n(simpleName)}'";
 
   static DeclarationMirror _TypeVariableMirror_owner(reflectee)
       native "TypeVariableMirror_owner";
 
   static Type _TypeVariableMirror_upper_bound(reflectee)
       native "TypeVariableMirror_upper_bound";
@@ skipping 465 matching lines @@
     if (typeMirror == null) {
       typeMirror = makeLocalTypeMirror(key);
       _instanitationCache[key] = typeMirror;
       if (typeMirror is ClassMirror && !typeMirror._isGeneric) {
         _declarationCache[key] = typeMirror;
       }
     }
     return typeMirror;
   }
 }