qt_dev: Fix ContentSuggestions service connection

Issue:
When the RemoteContentSuggestionsService dies (due to package manager
update or clear data), the ContentSuggestionsPerUserService (system)
does not restart and uses an old zombie instance.

Fix:
 Reset the instance upon onServiceDied in the system service.

Test: Verified that stopping/clear-data/package-update of Device
Personalization Services (which implements ContentSuggestionsService)
multiple-times and then Overview long-press actually works.

Also verified that if the Remote Service crashes, we don't keep
 reconnecting infinitely.

Fixes: 120865921
Fixes: 130420008

Change-Id: I80197ec1cb446ddb5f1865a4b75beb18b48d2e9e

services/contentsuggestions/java/com/android/server/contentsuggestions/ContentSuggestionsPerUserService.java

@@ -95,7 +95,7 @@ protected boolean updateLocked(boolean disabled) {
 
     @GuardedBy("mLock")
     void provideContextImageLocked(int taskId, @NonNull Bundle imageContextRequestExtras) {
-        RemoteContentSuggestionsService service = getRemoteServiceLocked();
+        RemoteContentSuggestionsService service = ensureRemoteServiceLocked();
         if (service != null) {
             ActivityManager.TaskSnapshot snapshot =
                     mActivityTaskManagerInternal.getTaskSnapshot(taskId, false);
@@ -118,7 +118,7 @@ void provideContextImageLocked(int taskId, @NonNull Bundle imageContextRequestEx
     void suggestContentSelectionsLocked(
             @NonNull SelectionsRequest selectionsRequest,
             @NonNull ISelectionsCallback selectionsCallback) {
-        RemoteContentSuggestionsService service = getRemoteServiceLocked();
+        RemoteContentSuggestionsService service = ensureRemoteServiceLocked();
         if (service != null) {
             service.suggestContentSelections(selectionsRequest, selectionsCallback);
         }
@@ -128,15 +128,15 @@ void suggestContentSelectionsLocked(
     void classifyContentSelectionsLocked(
             @NonNull ClassificationsRequest classificationsRequest,
             @NonNull IClassificationsCallback callback) {
-        RemoteContentSuggestionsService service = getRemoteServiceLocked();
+        RemoteContentSuggestionsService service = ensureRemoteServiceLocked();
         if (service != null) {
             service.classifyContentSelections(classificationsRequest, callback);
         }
     }
 
     @GuardedBy("mLock")
     void notifyInteractionLocked(@NonNull String requestId, @NonNull Bundle bundle) {
-        RemoteContentSuggestionsService service = getRemoteServiceLocked();
+        RemoteContentSuggestionsService service = ensureRemoteServiceLocked();
         if (service != null) {
             service.notifyInteraction(requestId, bundle);
         }
@@ -153,12 +153,12 @@ private void updateRemoteServiceLocked() {
 
     @GuardedBy("mLock")
     @Nullable
-    private RemoteContentSuggestionsService getRemoteServiceLocked() {
+    private RemoteContentSuggestionsService ensureRemoteServiceLocked() {
         if (mRemoteService == null) {
             final String serviceName = getComponentNameLocked();
             if (serviceName == null) {
                 if (mMaster.verbose) {
-                    Slog.v(TAG, "getRemoteServiceLocked(): not set");
+                    Slog.v(TAG, "ensureRemoteServiceLocked(): not set");
                 }
                 return null;
             }
@@ -170,8 +170,8 @@ private RemoteContentSuggestionsService getRemoteServiceLocked() {
                         @Override
                         public void onServiceDied(
                                 @NonNull RemoteContentSuggestionsService service) {
-                            // TODO(b/120865921): properly implement
                             Slog.w(TAG, "remote content suggestions service died");
+                            updateRemoteServiceLocked();
                         }
                     }, mMaster.isBindInstantServiceAllowed(), mMaster.verbose);
         }