Add constructors for Float32Array and friends.

client/html/src/Uint32ArrayWrappingImplementation.dart

Index: client/html/src/Uint32ArrayWrappingImplementation.dart
diff --git a/client/html/generated/src/wrapping/_Uint32ArrayWrappingImplementation.dart b/client/html/src/Uint32ArrayWrappingImplementation.dart
similarity index 54%
rename from client/html/generated/src/wrapping/_Uint32ArrayWrappingImplementation.dart
rename to client/html/src/Uint32ArrayWrappingImplementation.dart
index bde1a2af85f85b7730bfe2c83a97c9fd9b1ce0b2..2ff34d2bf40d263640796c95c50541e471f22b06 100644
--- a/client/html/generated/src/wrapping/_Uint32ArrayWrappingImplementation.dart
+++ b/client/html/src/Uint32ArrayWrappingImplementation.dart
@@ -2,11 +2,21 @@
 // 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 Uint32ArrayWrappingImplementation extends ArrayBufferViewWrappingImplementation implements Uint32Array {
   Uint32ArrayWrappingImplementation._wrap(ptr) : super._wrap(ptr) {}
 
+  factory Uint32ArrayWrappingImplementation(int length) =>
+    LevelDom.wrapUint32Array(new dom.Uint32Array(length));
+
+  factory Uint32ArrayWrappingImplementation.from(List<num> list) =>
+    // TODO(nweiz): when there's a cross-platform name for the native
+    // implementation of List, check if [list] is native and if not convert it
+    // to a native list before sending it to the JS constructor.
+    LevelDom.wrapUint32Array(new dom.Uint32Array.fromList(list));
+
+  factory Uint32ArrayWrappingImplementation.fromBuffer(ArrayBuffer buffer) =>
+    LevelDom.wrapUint32Array(new dom.Uint32Array.fromBuffer(LevelDom.unwrap(buffer)));
+
   int get length() { return _ptr.length; }
 
   Uint32Array subarray(int start, [int end]) {