Turn on webaudio for JS backends.

client/dom/generated/src/wrapping/_AudioChannelSplitterWrappingImplementation.dart

Index: client/dom/generated/src/wrapping/_AudioChannelSplitterWrappingImplementation.dart
diff --git a/client/dom/generated/src/wrapping/_AudioChannelSplitterWrappingImplementation.dart b/client/dom/generated/src/wrapping/_AudioChannelSplitterWrappingImplementation.dart
new file mode 100644
index 0000000000000000000000000000000000000000..2518e1d14f3693dbec7bfbc1ad3372b5d3aa75c0
--- /dev/null
+++ b/client/dom/generated/src/wrapping/_AudioChannelSplitterWrappingImplementation.dart
@@ -0,0 +1,15 @@
+// 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 _AudioChannelSplitterWrappingImplementation extends _AudioNodeWrappingImplementation implements AudioChannelSplitter {
+  _AudioChannelSplitterWrappingImplementation() : super() {}
+
+  static create__AudioChannelSplitterWrappingImplementation() native {
+    return new _AudioChannelSplitterWrappingImplementation();
+  }
+
+  String get typeName() { return "AudioChannelSplitter"; }
+}