Revert "Revert "Implement {Int,Uint}{8,16,32,64} and Float{32,64} typed arrays.""

runtime/bin/buffer_list.dart

Index: runtime/bin/buffer_list.dart
diff --git a/runtime/bin/buffer_list.dart b/runtime/bin/buffer_list.dart
index a6ec59010ff1fd40114581e88de33bd8066e71f8..510a11eaf31f76cbccad97512a9890e6313bf124 100644
--- a/runtime/bin/buffer_list.dart
+++ b/runtime/bin/buffer_list.dart
@@ -80,7 +80,7 @@ class _BufferList {
         }
         return result;
       } else {
-        result = new ByteArray(count);
+        result = new Uint8List(count);
         int remaining = count;
         while (remaining > 0) {
           int bytesInFirst = _buffers.first().length - _index;