Add constructors for Float32Array and friends.

client/html/generated/src/wrapping/_Int16ArrayWrappingImplementation.dart

-// Copyright (c) 2011, 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.
-
-// WARNING: Do not edit - generated code.
-
-class Int16ArrayWrappingImplementation extends ArrayBufferViewWrappingImplementation implements Int16Array {
-  Int16ArrayWrappingImplementation._wrap(ptr) : super._wrap(ptr) {}
-
-  int get length() { return _ptr.length; }
-
-  Int16Array subarray(int start, [int end]) {
-    if (end === null) {
-      return LevelDom.wrapInt16Array(_ptr.subarray(start));
-    } else {
-      return LevelDom.wrapInt16Array(_ptr.subarray(start, end));
-    }
-  }
-}