Merge "Ensure SysUI gets VIS callback when session's over" into tm-qpr-dev am: 6dca005ed2

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20515205

Change-Id: Id33a2dac71df9e06f2a27631f40ad3174894cecc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

core/java/com/android/internal/app/IVoiceInteractionSessionListener.aidl

@@ -31,6 +31,8 @@
 
     /**
      * Called when a voice session window is shown/hidden.
+     * Caution that there could be duplicated visibility change callbacks, it's up to the listener
+     * to dedup those events.
      */
     void onVoiceSessionWindowVisibilityChanged(boolean visible);
 

services/voiceinteraction/java/com/android/server/voiceinteraction/VoiceInteractionManagerServiceImpl.java

@@ -880,5 +880,8 @@ class VoiceInteractionManagerServiceImpl implements VoiceInteractionSessionConne
     @Override
     public void onSessionHidden(VoiceInteractionSessionConnection connection) {
         mServiceStub.onSessionHidden();
+        // Notifies visibility change here can cause duplicate events, it is added to make sure
+        // client always get the callback even if session is unexpectedly closed.
+        mServiceStub.setSessionWindowVisible(connection.mToken, false);
     }
 }