DialogSurfaceManager implementation.

media/base/android/java/src/org/chromium/media/IDialogSurface.aidl

+// 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.
+
+package org.chromium.media;
+
+interface IDialogSurface {
+    /**
+     * Close the surface and clean up.  This DialogSurface can't be re-used
+     * after this, though additional calls to release() are okay.
+     */
+    void release();
+
+    /**
+     * Return the android Surface, if we have one.
+     */
+    Surface getSurface();
+
+    /**
+     * Schedule an asynchronous layout of the surface.
+     */
+    void scheduleLayoutSurface(int x, int y, int width, int height);
+}