dart2js: Share nativeSuperclassTagName between runtime and compiler.

pkg/compiler/lib/src/js_emitter/old_emitter/emitter.dart

 // Copyright (c) 2014, 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.
 
 part of dart2js.js_emitter;
 
 
 class OldEmitter implements Emitter {
   final Compiler compiler;
   final CodeEmitterTask task;
@@ skipping 673 matching lines @@
                 #leafTagsAccess[tags[i]] = true;
               }
             }
             if (nativeSpec[1]) {
               tags = nativeSpec[1].split("|");
               if (#allowNativesSubclassing) {
                 if (nativeSpec[2]) {
                   var subclasses = nativeSpec[2].split("|");
                   for (var i = 0; i < subclasses.length; i++) {
                     var subclass = allClasses[subclasses[i]];
-                    subclass.\$nativeSuperclassTag = tags[0];
+                    subclass.#nativeSuperclassTagName = tags[0];
                   }
                 }
                 for (i = 0; i < tags.length; i++) {
                   #interceptorsByTagAccess[tags[i]] = constructor;
                   #leafTagsAccess[tags[i]] = false;
                 }
               }
             }
           }
         }
       }
     }''', {'finishedClassesAccess': finishedClassesAccess,
            'needsMixinSupport': needsMixinSupport,
            'hasNativeClasses': nativeClasses.isNotEmpty,
+           'nativeSuperclassTagName': embeddedNames.NATIVE_SUPERCLASS_TAG_NAME,
            'interceptorsByTagAccess': interceptorsByTagAccess,
            'leafTagsAccess': leafTagsAccess,
            'allowNativesSubclassing': true});
   }
 
   jsAst.Fun get finishIsolateConstructorFunction {
     // We replace the old Isolate function with a new one that initializes
     // all its fields with the initial (and often final) value of all globals.
     //
     // We also copy over old values like the prototype, and the
@@ skipping 1557 matching lines @@
     for (Element element in compiler.enqueuer.codegen.newlyEnqueuedElements) {
       if (element.isInstanceMember) {
         cachedClassBuilders.remove(element.enclosingClass);
 
         nativeEmitter.cachedBuilders.remove(element.enclosingClass);
 
       }
     }
   }
 }