Move Iterable implementation to collection.

pkg/serialization/lib/src/serialization_rule.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.
 
 part of serialization;
 
 // TODO(alanknight): We should have an example and tests for subclassing
 // serialization rule rather than using the hard-coded ClosureToMap rule. And
 // possibly an abstract superclass that's designed to be subclassed that way.
 /**
@@ skipping 503 matching lines @@
   clear() => _throw();
 }
 
 /**
  * This provides an implementation of List that wraps a list which may
  * contain references to (potentially) non-inflated objects. If these
  * are accessed it will inflate them. This allows us to pass something that
  * looks like it's just a list of objects to a [CustomRule] without needing
  * to inflate all the references in advance.
  */
-class _LazyList extends Iterable implements List {
+class _LazyList extends IterableBase implements List {
   _LazyList(this._raw, this._reader);
 
   final List _raw;
   final Reader _reader;
 
   // This is the only operation that really matters.
   operator [](x) => _reader.inflateReference(_raw[x]);
 
   int get length => _raw.length;
   bool get isEmpty => _raw.isEmpty;
@@ skipping 28 matching lines @@
   retainAll(x) => _throw();
   removeWhere(x) => _throw();
   retainWhere(x) => _throw();
   getRange(x, y) => _throw();
   setRange(x, y, z, [a]) => _throw();
   removeRange(x, y) => _throw();
   insertRange(x, y, [z]) => _throw();
   get reversed => _throw();
   void set length(x) => _throw();
 }