Fix type annotation.

sdk/lib/_internal/compiler/implementation/elements/modelx.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 elements.modelx;
 
 import 'dart:collection' show LinkedHashMap;
 
 import 'elements.dart';
 import '../../compiler.dart' as api;
@@ skipping 162 matching lines @@
     return true;
   }
 
   Token position() => null;
 
   Token findMyName(Token token) {
     // We search for the token that has the name of this element.
     // For constructors, that doesn't work because they may have
     // named formed out of multiple tokens (named constructors) so
     // for those we search for the class name instead.
-    String needle = isConstructor() ? enclosingElement.name : name;
+    SourceString needle = isConstructor() ? enclosingElement.name : name;
     for (Token t = token; EOF_TOKEN != t.kind; t = t.next) {
       if (needle == t.value) return t;
     }
     return token;
   }
 
   CompilationUnitElement getCompilationUnit() {
     Element element = this;
     while (!element.isCompilationUnit()) {
       element = element.enclosingElement;
@@ skipping 2014 matching lines @@
 
   MetadataAnnotation ensureResolved(Compiler compiler) {
     if (resolutionState == STATE_NOT_STARTED) {
       compiler.resolver.resolveMetadataAnnotation(this);
     }
     return this;
   }
 
   String toString() => 'MetadataAnnotation($value, $resolutionState)';
 }