Fix failures in byte array tests, reenabled test.

runtime/lib/byte_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.
 
 patch class Int8List {
   /* patch */ factory Int8List(int length) {
     return new _Int8Array(length);
   }
 
   /* patch */ factory Int8List.transferable(int length) {
@@ skipping 591 matching lines @@
   int lengthInBytes() {
     return _length() * _BYTES_PER_ELEMENT;
   }
 
   static const int _BYTES_PER_ELEMENT = 1;
 
   static _Uint8ClampedArray _new(int length) native "Uint8ClampedArray_new";
   static _Uint8ClampedArray _newTransferable(int length)
       native "Uint8ClampedArray_newTransferable";
 
-  int _getIndexed(int index) native "Uint8Array_getIndexed";
-  int _setIndexed(int index, int value) native "Uint8Array_setIndexed";
+  int _getIndexed(int index) native "Uint8ClampedArray_getIndexed";
+  int _setIndexed(int index, int value) native "Uint8ClampedArray_setIndexed";
 }
 
 
 class _Int16Array extends _ByteArrayBase implements Int16List {
   factory _Int16Array(int length) {
     return _new(length);
   }
 
   factory _Int16Array.transferable(int length) {
     return _newTransferable(length);
@@ skipping 1991 matching lines @@
     }
     _rangeCheck(this.length, start, length);
     return _array.subByteArray(_offset + start, length);
   }
 
   static const int _BYTES_PER_ELEMENT = 8;
   final ByteArray _array;
   final int _offset;
   final int _length;
 }