Cast InternalMap to Map.

pkg/dev_compiler/tool/input_sdk/private/linked_hash_map.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.
 
 // Efficient JavaScript based implementation of a linked hash map used as a
 // backing map for constant maps and the [LinkedHashMap] patch
 
 part of dart._js_helper;
 
 // DDC-specific, just use Object-backed maps
 //const _USE_ES6_MAPS = const bool.fromEnvironment("dart2js.use.es6.maps");
 
-class JsLinkedHashMap<K, V> implements LinkedHashMap<K, V>, InternalMap {
+class JsLinkedHashMap<K, V> implements LinkedHashMap<K, V>, InternalMap<K, V> {
   int _length = 0;
 
   // The hash map contents are divided into three parts: one part for
   // string keys, one for numeric keys, and one for the rest. String
   // and numeric keys map directly to their linked cells, but the rest
   // of the entries are stored in bucket lists of the form:
   //
   //    [cell-0, cell-1, ...]
   //
   // where all keys in the same bucket share the same hash code.
@@ skipping 405 matching lines @@
     } else if (_cell == null) {
       _current = null;
       return false;
     } else {
       _current = _cell.hashMapCellKey;
       _cell = _cell._next;
       return true;
     }
   }
 }