Make List.shuffle take an optional Random object to use.

sdk/lib/typed_data/typed_data.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.
 
 library dart.typed_data;
 
 import 'dart:collection';
 import 'dart:_collection-dev';
+import 'dart:math' show Random;
 
 /**
  * A sequence of bytes underlying a typed data object.
  * Used to process large quantities of binary or numerical data
  * more efficiently using a typed view.
  */
 abstract class ByteBuffer {
   /**
    * Returns the length of this byte buffer, in bytes.
    */
@@ skipping 1226 matching lines @@
   /// Returns a new [Uint32x4] copied from [this] with a new z value.
   Uint32x4 withFlagZ(bool z);
   /// Returns a new [Uint32x4] copied from [this] with a new w value.
   Uint32x4 withFlagW(bool w);
 
   /// Merge [trueValue] and [falseValue] based on [this]' bit mask:
   /// Select bit from [trueValue] when bit in [this] is on.
   /// Select bit from [falseValue] when bit in [this] is off.
   Float32x4 select(Float32x4 trueValue, Float32x4 falseValue);
 }