(Re)move methods from internal.Lists that are not used, or only used once.

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 _List<E> extends FixedLengthListBase<E> {
 
   factory _List(length) native "List_allocate";
 
@@ skipping 42 matching lines @@
         skipCount--;
       }
       for (int i = start; i < end; i++) {
         if (!it.moveNext()) return;
         this[i] = it.current;
       }
     }
   }
 
   List<E> sublist(int start, [int end]) {
-    Lists.indicesCheck(this, start, end);
-    if (end == null) end = this.length;
+    end = RangeError.checkValidRange(start, end, this.length);
     int length = end - start;
-    if (start == end) return <E>[];
+    if (length == 0) return <E>[];
     var result = new _GrowableList<E>.withData(_slice(start, length, false));
     result._setLength(length);
     return result;
   }
 
   // Iterable interface.
 
   void forEach(f(E element)) {
     final length = this.length;
     for (int i = 0; i < length; i++) {
@@ skipping 52 matching lines @@
   }
 
   factory _ImmutableList._from(List from, int offset, int length)
       native "ImmutableList_from";
 
   E operator [](int index) native "List_getIndexed";
 
   int get length native "List_getLength";
 
   List<E> sublist(int start, [int end]) {
-    Lists.indicesCheck(this, start, end);
-    if (end == null) end = this.length;
+    end = RangeError.checkValidRange(start, end, this.length);
     int length = end - start;
     if (length == 0) return <E>[];
     List list = new _List(length);
     for (int i = 0; i < length; i++) {
       list[i] = this[start + i];
     }
     var result = new _GrowableList<E>.withData(list);
     result._setLength(length);
     return result;
   }
@@ skipping 61 matching lines @@
   bool moveNext() {
     if (_index >= _length) {
       _current = null;
       return false;
     }
     _current = _array[_index];
     _index++;
     return true;
   }
 }