Index: media/base/android/java/src/org/chromium/media/DialogSurfaceWindowTokenProvider.java |
diff --git a/media/base/android/java/src/org/chromium/media/DialogSurfaceWindowTokenProvider.java b/media/base/android/java/src/org/chromium/media/DialogSurfaceWindowTokenProvider.java |
new file mode 100644 |
index 0000000000000000000000000000000000000000..37701ecc7214dfc756bfe534bd8a9179e20a4a97 |
--- /dev/null |
+++ b/media/base/android/java/src/org/chromium/media/DialogSurfaceWindowTokenProvider.java |
@@ -0,0 +1,37 @@ |
+// 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; |
+ |
+/** |
+ * Class to facilitate mapping (pid, render_frame_id) to an Activity. Should |
+ * also handle registering for changes if the render frame is re-parented to |
+ * another activity. |
+ */ |
+public interface DialogSurfaceWindowTokenProvider { |
+ /** |
+ * Client to receive callbacks from the token provider. |
+ */ |
+ interface Client { |
+ // Notify the client of a new window token, or null if no token is |
+ // currently available. This callback will happen on the UI thread. |
+ void onWindowToken(IBinder token); |
+ } |
+ |
+ /** |
+ * Eventually call back |client::onWindowToken| with the window token for |
+ * the activity that hosts (rendererPid, renderFrameId). This will call |
+ * back, but may call back with null. It may call back more than once if |
+ * the token changes. |
+ */ |
+ void registerClient(int rendererPid, int renderFrameId, Client client); |
+ |
+ /** |
+ * Unregister |client| for callbacks. Some callbacks may be in-flight, and |
+ * could arrive after this returns. |
+ */ |
+ void unregisterClient(Client client); |
+} |