Rename XMatching to XWhere.

sdk/lib/collection/hash_set.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.
 
 part of dart.collection;
 
 class HashSet<E> extends Collection<E> implements Set<E> {
   static const int _INITIAL_CAPACITY = 8;
   final _HashTable<E> _table;
 
@@ skipping 37 matching lines @@
     for (Object object in objectsToRemove) {
       _table._remove(object);
       _table._checkCapacity();
     }
   }
 
   void retainAll(Iterable objectsToRetain) {
     IterableMixinWorkaround.retainAll(this, objectsToRetain);
   }
 
-  void _filterMatching(bool test(E element), bool removeMatching) {
+  void _filterWhere(bool test(E element), bool removeMatching) {
     int entrySize = _table._entrySize;
     int length = _table._table.length;
     for (int offset =  0; offset < length; offset += entrySize) {
       Object entry = _table._table[offset];
       if (!_table._isFree(entry)) {
         E key = identical(entry, _NULL) ? null : entry;
         int modificationCount = _table._modificationCount;
         bool shouldRemove = (removeMatching == test(key));
         _table._checkModification(modificationCount);
         if (shouldRemove) {
           _table._deleteEntry(offset);
         }
       }
     }
     _table._checkCapacity();
   }
 
-  void removeMatching(bool test(E element)) {
-    _filterMatching(test, true);
+  void removeWhere(bool test(E element)) {
+    _filterWhere(test, true);
   }
 
-  void retainMatching(bool test(E element)) {
-    _filterMatching(test, false);
+  void retainWhere(bool test(E element)) {
+    _filterWhere(test, false);
   }
 
   void clear() {
     _table._clear();
   }
 
   // Set.
   bool isSubsetOf(Collection<E> collection) {
     Set otherSet;
     if (collection is Set) {
@@ skipping 16 matching lines @@
     for (E element in other) {
       if (this.contains(element)) {
         result.add(element);
       }
     }
     return result;
   }
 
   String toString() =>  Collections.collectionToString(this);
 }