DialogSurfaceManager implementation.

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

Index: media/base/android/java/src/org/chromium/media/IDialogSurfaceActivityMapper.aidl
diff --git a/media/base/android/java/src/org/chromium/media/IDialogSurfaceActivityMapper.aidl b/media/base/android/java/src/org/chromium/media/IDialogSurfaceActivityMapper.aidl
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index 0000000000000000000000000000000000000000..a9d6939dbe0c25eff18c277ce9edd2e900c35df0
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+++ b/media/base/android/java/src/org/chromium/media/IDialogSurfaceActivityMapper.aidl
@@ -0,0 +1,27 @@
+// 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;
+
+import android.os.IBinder;
+
+import org.chromium.base.UnguessableToken;
+
+/**
+ * Class to facilitate mapping |frameToken| to an Activity.  It will
+ * also handle registering for changes if the render frame is re-parented to
+ * another activity.
+ *
+ * |frameToken| is an unguessable token that's provided by the browser, so that
+ * the renderer can identify a render frame to the untrusted GPU process,
+ * without it being able to guess the identity of other frames.
+ */
+interface IDialogSurfaceActivityMapper {
+    /**
+     * Eventually call back holder::onWindowToken with the window token for the
+     * activity that hosts |frameToken|.  This will call back, but it may call
+     * back with null.
+     */
+    void postWindowToken(in UnguessableToken frameToken, IDialogSurfaceHolder holder);
+}