Support isExternal method on MethodMirror in the Dart VM. Not really intended for public consumptio…

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" show UnmodifiableListView, UnmodifiableMapView;
 import "dart:async" show Future;
 
 var dirty = false;
@@ skipping 1354 matching lines @@
       : super(reflectee, _s(simpleName));
 
   static const kAbstract = 0;
   static const kGetter = 1;
   static const kSetter = 2;
   static const kConstructor = 3;
   static const kConstCtor = 4;
   static const kGenerativeCtor = 5;
   static const kRedirectingCtor = 6;
   static const kFactoryCtor = 7;
+  static const kExternal = 8;
 
   // These offsets much be kept in sync with those in mirrors.h.
   bool get isAbstract =>               0 != (_kindFlags & (1 << kAbstract));
   bool get isGetter =>                 0 != (_kindFlags & (1 << kGetter));
   bool get isSetter =>                 0 != (_kindFlags & (1 << kSetter));
   bool get isConstructor =>            0 != (_kindFlags & (1 << kConstructor));
   bool get isConstConstructor =>       0 != (_kindFlags & (1 << kConstCtor));
   bool get isGenerativeConstructor =>  0 != (_kindFlags & (1 << kGenerativeCtor));
   bool get isRedirectingConstructor => 0 != (_kindFlags & (1 << kRedirectingCtor));
   bool get isFactoryConstructor =>     0 != (_kindFlags & (1 << kFactoryCtor));
+  bool get isExternal =>               0 != (_kindFlags & (1 << kExternal));
 
   static const _operators = const ["%", "&", "*", "+", "-", "/", "<", "<<",
       "<=", "==", ">", ">=", ">>", "[]", "[]=", "^", "|", "~", "unary-", "~/"];
   bool get isOperator => _operators.contains(_n(simpleName));
 
   DeclarationMirror _owner;
   DeclarationMirror get owner {
     // For nested closures it is possible, that the mirror for the owner has not
     // been created yet.
     if (_owner == null) {
@@ skipping 269 matching lines @@
     if (typeMirror == null) {
       typeMirror = makeLocalTypeMirror(key);
       _instanitationCache[key] = typeMirror;
       if (typeMirror is ClassMirror && !typeMirror._isGeneric) {
         _declarationCache[key] = typeMirror;
       }
     }
     return typeMirror;
   }
 }