Remove Collection, Collections and clean up List/Set/Queue implementations of retain/remove.

runtime/lib/growable_array.dart

 // Copyright (c) 2012, 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.
 
 class _GrowableObjectArray<T> implements List<T> {
   factory _GrowableObjectArray._uninstantiable() {
     throw new UnsupportedError(
         "GrowableObjectArray can only be allocated by the VM");
   }
 
@@ skipping 34 matching lines @@
 
   void remove(Object element) {
     for (int i = 0; i < this.length; i++) {
       if (this[i] == element) {
         removeAt(i);
         return;
       }
     }
   }
 
-  void removeAll(Iterable elements) {
-    IterableMixinWorkaround.removeAllList(this, elements);
-  }
-
-  void retainAll(Iterable elements) {
-    IterableMixinWorkaround.retainAll(this, elements);
-  }
-
   void removeWhere(bool test(T element)) {
     IterableMixinWorkaround.removeWhereList(this, test);
   }
 
   void retainWhere(bool test(T element)) {
     IterableMixinWorkaround.removeWhereList(this,
                                             (T element) => !test(element));
   }
 
   Iterable<T> getRange(int start, int end) {
@@ skipping 55 matching lines @@
     var result = new _GrowableObjectArray<T>.withData(data);
     result._setLength(length);
     return result;
   }
 
   factory _GrowableObjectArray.withCapacity(int capacity) {
     var data = new _ObjectArray((capacity == 0)? 4 : capacity);
     return new _GrowableObjectArray<T>.withData(data);
   }
 
-  factory _GrowableObjectArray.from(Collection<T> other) {
+  factory _GrowableObjectArray.from(Iterable<T> other) {
     List<T> result = new _GrowableObjectArray<T>();
     result.addAll(other);
     return result;
   }
 
   factory _GrowableObjectArray.withData(_ObjectArray data)
     native "GrowableObjectArray_allocate";
 
   int get length native "GrowableObjectArray_getLength";
 
@@ skipping 177 matching lines @@
     this.length = 0;
   }
 
   Iterable<T> get reversed => IterableMixinWorkaround.reversedList(this);
 
   void sort([int compare(T a, T b)]) {
     IterableMixinWorkaround.sortList(this, compare);
   }
 
   String toString() {
-    return Collections.collectionToString(this);
+    return ToString.iterableToString(this);
   }
 
   Iterator<T> get iterator {
     return new ListIterator<T>(this);
   }
 
   List<T> toList({ bool growable: true }) {
     return new List<T>.from(this, growable: growable);
   }
 
   Set<T> toSet() {
     return new Set<T>.from(this);
   }
 
   Map<int, T> asMap() {
     return IterableMixinWorkaround.asMapList(this);
   }
 }