Initial WebAudio API stubs

components/script/dom/webidls/PeriodicWave.webidl

@@ -0,0 +1,21 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+/*
+ * The origin of this IDL file is
+ * https://webaudio.github.io/web-audio-api/#periodicwave
+ */
+
+dictionary PeriodicWaveConstraints {
+  boolean disableNormalization = false;
+};
+
+dictionary PeriodicWaveOptions : PeriodicWaveConstraints {
+  sequence<float> real;
+  sequence<float> imag;
+};
+
+[Exposed=Window,
+ Constructor(BaseAudioContext context, optional PeriodicWaveOptions options)]
+interface PeriodicWave {
+};