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

runtime/lib/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.
 
 
 // TODO(srdjan): Use shared array implementation.
 class _ObjectArray<E> implements List<E> {
 
   factory _ObjectArray(length) native "ObjectArray_allocate";
 
   E operator [](int index) native "ObjectArray_getIndexed";
 
   void operator []=(int index, E value) native "ObjectArray_setIndexed";
 
   String toString() {
-    return Collections.collectionToString(this);
+    return ToString.iterableToString(this);
   }
 
   int get length native "ObjectArray_getLength";
 
   void _copyFromObjectArray(_ObjectArray src,
                             int srcStart,
                             int dstStart,
                             int count)
       native "ObjectArray_copyFromObjectArray";
 
   void insert(int index, E element) {
     throw new UnsupportedError(
         "Cannot add to a non-extendable array");
   }
 
   E removeAt(int index) {
     throw new UnsupportedError(
         "Cannot remove element of a non-extendable array");
   }
 
   void remove(Object element) {
     throw new UnsupportedError(
         "Cannot remove element of a non-extendable array");
   }
 
-  // Collection interface.
-  void removeAll(Iterable elements) {
-    throw new UnsupportedError(
-        "Cannot remove element of a non-extendable array");
-  }
-
-  void retainAll(Iterable elements) {
-    throw new UnsupportedError(
-        "Cannot remove element of a non-extendable array");
-  }
-
   void removeWhere(bool test(E element)) {
     throw new UnsupportedError(
         "Cannot remove element of a non-extendable array");
   }
 
   void retainWhere(bool test(E element)) {
     throw new UnsupportedError(
         "Cannot remove element of a non-extendable array");
   }
 
@@ skipping 216 matching lines @@
   E removeAt(int index) {
     throw new UnsupportedError(
         "Cannot modify an immutable array");
   }
 
   void remove(Object element) {
     throw new UnsupportedError(
         "Cannot modify an immutable array");
   }
 
-  void removeAll(Iterable elements) {
-    throw new UnsupportedError(
-        "Cannot modify an immutable array");
-  }
-
-  void retainAll(Iterable elements) {
-    throw new UnsupportedError(
-        "Cannot modify an immutable array");
-  }
-
   void removeWhere(bool test(E element)) {
     throw new UnsupportedError(
         "Cannot modify an immutable array");
   }
 
   void retainWhere(bool test(E element)) {
     throw new UnsupportedError(
         "Cannot modify an immutable array");
   }
 
@@ skipping 109 matching lines @@
   }
 
   Iterable<E> get reversed => IterableMixinWorkaround.reversedList(this);
 
   void sort([int compare(E a, E b)]) {
     throw new UnsupportedError(
         "Cannot modify an immutable array");
   }
 
   String toString() {
-    return Collections.collectionToString(this);
+    return ToString.iterableToString(this);
   }
 
   int indexOf(E element, [int start = 0]) {
     return Arrays.indexOf(this, element, start, this.length);
   }
 
   int lastIndexOf(E element, [int start = null]) {
     if (start == null) start = length - 1;
     return Arrays.lastIndexOf(this, element, start);
   }
@@ skipping 78 matching lines @@
     }
     _position = _length;
     _current = null;
     return false;
   }
 
   E get current {
     return _current;
   }
 }