Add CustomEvent

tool/input_sdk/lib/web_audio/ddc/web_audio_ddc.dart

Index: tool/input_sdk/lib/web_audio/ddc/web_audio_ddc.dart
diff --git a/tool/input_sdk/lib/web_audio/ddc/web_audio_ddc.dart b/tool/input_sdk/lib/web_audio/ddc/web_audio_ddc.dart
new file mode 100644
index 0000000000000000000000000000000000000000..29dd5c080a1f4bb6e4c0fef8eb81b7473d083e09
--- /dev/null
+++ b/tool/input_sdk/lib/web_audio/ddc/web_audio_ddc.dart
@@ -0,0 +1,31 @@
+/**
+ * High-fidelity audio programming in the browser.
+ */
+library dart.dom.web_audio;
+
+import 'dart:async';
+import 'dart:collection';
+import 'dart:_internal';
+import 'dart:html';
+import 'dart:html_common';
+import 'dart:_native_typed_data';
+import 'dart:typed_data';
+import 'dart:_js_helper' show Creates, JSName, Native, Returns, convertDartClosureToJS;
+import 'dart:_foreign_helper' show JS;
+import 'dart:_interceptors' show Interceptor;
+// DO NOT EDIT - unless you are editing documentation as per:
+// https://code.google.com/p/dart/wiki/ContributingHTMLDocumentation
+// Auto-generated dart:audio library.
+
+
+
+
+// FIXME: Can we make this private?
+final web_audioBlinkMap = {
+
+};
+
+// FIXME: Can we make this private?
+final web_audioBlinkFunctionMap = {
+
+};