Use elements/types in constants/values

pkg/compiler/lib/src/mirrors_used.dart

 // Copyright (c) 2013, 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 dart2js.mirrors_used;
 
 import 'common/tasks.dart' show CompilerTask;
 import 'common.dart';
 import 'compile_time_constants.dart' show ConstantCompiler;
 import 'compiler.dart' show Compiler;
@@ skipping 234 matching lines @@
       LibraryElement library, ImportElement import) {
     LibraryElement importedLibrary = import.importedLibrary;
     if (importedLibrary != compiler.commonElements.mirrorsLibrary) {
       return null;
     }
     List<MirrorUsage> result = <MirrorUsage>[];
     for (MetadataAnnotation metadata in import.metadata) {
       metadata.ensureResolved(compiler.resolution);
       ConstantValue value =
           compiler.constants.getConstantValue(metadata.constant);
-      Element element = value.getType(compiler.commonElements).element;
+      ResolutionDartType type = value.getType(compiler.commonElements);
+      Element element = type.element;
       if (element == compiler.commonElements.mirrorsUsedClass) {
         result.add(buildUsage(value));
       }
     }
     return result;
   }
 
   /// Merge all [MirrorUsage] instances accross all libraries.
   MirrorUsage mergeUsages(Map<LibraryElement, List<MirrorUsage>> usageMap) {
     Set<MirrorUsage> usagesToMerge = new Set<MirrorUsage>();
@@ skipping 299 matching lines @@
       // @MirrorsUsed(targets: fisk)
       //                       ^^^^
       //
       // Instead of saying 'fisk' should pretty print the problematic constant
       // value.
       return spannable;
     }
     return node;
   }
 }