Roll to pickup pool changes

packages/crypto/lib/src/hash_sink.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.
 
 import 'dart:typed_data';
 
 import 'package:typed_data/typed_data.dart';
 
 import 'digest.dart';
 import 'utils.dart';
@@ skipping 109 matching lines @@
     // land cleanly on a chunk boundary.
     _pendingData.add(0x80);
     var contentsLength = _lengthInBytes + 9;
     var finalizedLength = _roundUp(contentsLength, _currentChunk.lengthInBytes);
     for (var i = 0; i < finalizedLength - contentsLength; i++) {
       _pendingData.add(0);
     }
 
     if (_lengthInBytes > _maxMessageLengthInBytes) {
       throw new UnsupportedError(
-          "Hashing is unsupported for messages with more than 2^64 bits.");
+          'Hashing is unsupported for messages with more than 2^64 bits.');
     }
 
     var lengthInBits = _lengthInBytes * bitsPerByte;
 
     // Add the full length of the input data as a 64-bit value at the end of the
     // hash.
     var offset = _pendingData.length;
     _pendingData.addAll(new Uint8List(8));
     var byteData = _pendingData.buffer.asByteData();
 
     // We're essentially doing byteData.setUint64(offset, lengthInBits, _endian)
     // here, but that method isn't supported on dart2js so we implement it
     // manually instead.
     var highBits = lengthInBits >> 32;
     var lowBits = lengthInBits & mask32;
     if (_endian == Endianness.BIG_ENDIAN) {
       byteData.setUint32(offset, highBits, _endian);
       byteData.setUint32(offset + bytesPerWord, lowBits, _endian);
     } else {
       byteData.setUint32(offset, lowBits, _endian);
       byteData.setUint32(offset + bytesPerWord, highBits, _endian);
     }
   }
 
   /// Rounds [val] up to the next multiple of [n], as long as [n] is a power of
   /// two.
   int _roundUp(int val, int n) => (val + n - 1) & -n;
 }