Add proper API for creating private symbols wrt a library.

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 271 matching lines @@
   delegate(Invocation invocation) {
     if (_invokeOnClosure == null) {
       // TODO(ahe): This is a total hack.  We're using the mirror
       // system to access a private field in a different library.  For
       // some reason, that works.  On the other hand, calling a
       // private method does not work.
 
       _LocalInstanceMirrorImpl mirror =
           reflect(invocation);
       _invokeOnClosure = reflectClass(invocation.runtimeType)
-          .getField(const Symbol('_invokeOnClosure')).reflectee;
+          .getField(MirrorSystem.getSymbol('_invokeOnClosure', mirror.type.owner)).reflectee;
     }
     return _invokeOnClosure(reflectee, invocation);
   }
 
   String toString() => 'InstanceMirror on ${Error.safeToString(_reflectee)}';
 
   bool operator ==(other) {
     return other is _LocalInstanceMirrorImpl &&
            identical(_reflectee, other._reflectee);
   }
@@ skipping 334 matching lines @@
   bool get isOriginalDeclaration => !_isGeneric || _isGenericDeclaration;
 
   ClassMirror get originalDeclaration {
     if (isOriginalDeclaration) {
       return this;
     } else {
       return reflectClass(_reflectedType);
     }
   }
 
-  String toString() => "ClassMirror on '${_n(simpleName)}'";
+  String toString() => "ClassMirror on '${MirrorSystem.getName(simpleName)}'";
 
   InstanceMirror newInstance(Symbol constructorName,
                              List positionalArguments,
                              [Map<Symbol, dynamic> namedArguments]) {
     // Native code will add the 1 or 2 implicit arguments depending on whether
     // we end up invoking a factory or constructor respectively.
     int numPositionalArguments = positionalArguments.length;
     int numNamedArguments = namedArguments != null ? namedArguments.length : 0;
     int numArguments = numPositionalArguments + numNamedArguments;
     List arguments = new List(numArguments);
@@ skipping 462 matching lines @@
 
   void _patchConstructorName(ownerName) {
     var cn = _n(constructorName);
     if(cn == ''){
       _simpleName = _s(ownerName);
     } else {
       _simpleName = _s(ownerName + "." + cn);
     }
   }
 
-  String toString() => "MethodMirror on '${_n(simpleName)}'";
+  String toString() => "MethodMirror on '${MirrorSystem.getName(simpleName)}'";
 
   static dynamic _MethodMirror_owner(reflectee)
       native "MethodMirror_owner";
 
   static dynamic _MethodMirror_return_type(reflectee)
       native "MethodMirror_return_type";
 
   List<ParameterMirror> _MethodMirror_parameters(reflectee)
       native "MethodMirror_parameters";
 
@@ skipping 24 matching lines @@
   }
 
   TypeMirror _type;
   TypeMirror get type {
     if (_type == null) {
        _type = _Mirrors._reflectType(_VariableMirror_type(_reflectee));
     }
     return _type;
   }
 
-  String toString() => "VariableMirror on '${_n(simpleName)}'";
+  String toString() => "VariableMirror on '${MirrorSystem.getName(simpleName)}'";
 
   static _VariableMirror_type(reflectee)
       native "VariableMirror_type";
 }
 
 class _LocalParameterMirrorImpl extends _LocalVariableMirrorImpl
     implements ParameterMirror {
   _LocalParameterMirrorImpl(reflectee,
                             String simpleName,
                             DeclarationMirror owner,
@@ skipping 145 matching lines @@
     if (typeMirror == null) {
       typeMirror = makeLocalTypeMirror(key);
       _instanitationCache[key] = typeMirror;
       if (typeMirror is ClassMirror && !typeMirror._isGeneric) {
         _declarationCache[key] = typeMirror;
       }
     }
     return typeMirror;
   }
 }