mash: Add autoclick app.

ash/autoclick/mus/public/interfaces/autoclick.mojom

Index: ash/autoclick/mus/public/interfaces/autoclick.mojom
diff --git a/ash/autoclick/mus/public/interfaces/autoclick.mojom b/ash/autoclick/mus/public/interfaces/autoclick.mojom
new file mode 100644
index 0000000000000000000000000000000000000000..93e1f0dc8f366dc4e80fe5fcf406f977be769ffb
--- /dev/null
+++ b/ash/autoclick/mus/public/interfaces/autoclick.mojom
@@ -0,0 +1,11 @@
+// Copyright 2016 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.
+
+module ash.autoclick.mojom;
+
+// Used by Chrome to set the time to wait in milliseconds from when the mouse
+// stops moving to when the autoclick event is sent in accessibility_autoclick.
+interface AutoclickController {
+  SetAutoclickDelay(uint32 delay_in_milliseconds);
+};