Implement AudioWorkletProcessor interface

third_party/WebKit/Source/modules/webaudio/AudioWorkletProcessor.idl

Index: third_party/WebKit/Source/modules/webaudio/AudioWorkletProcessor.idl
diff --git a/third_party/WebKit/Source/modules/webaudio/AudioWorkletProcessor.idl b/third_party/WebKit/Source/modules/webaudio/AudioWorkletProcessor.idl
new file mode 100644
index 0000000000000000000000000000000000000000..6079982d3fbe9bc3f5c868b4967c26b57ee31220
--- /dev/null
+++ b/third_party/WebKit/Source/modules/webaudio/AudioWorkletProcessor.idl
@@ -0,0 +1,16 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// https://webaudio.github.io/web-audio-api/#AudioWorkletProcessor
+
+[
+    Exposed=AudioWorklet,
+    Global=(Worklet,AudioWorklet),
+    RuntimeEnabled=AudioWorklet,
+] interface AudioWorkletProcessor {
+    // TODO(hongchan): implement spec features.
+    // readonly attribute AudioContextInfo contextInfo;
+    // attribute EventHandler onnodedata;
+    // void sendData(any data);
+};