Merge "Ensure valid parameters for CHOOSER_ACTION events." into udc-dev

        @Override

        public void reportChooserSelection(@NonNull String packageName, int userId,

                String contentType, String[] annotations, String action) {

                @NonNull String contentType, String[] annotations, @NonNull String action) {

            if (packageName == null) {

                throw new IllegalArgumentException("Package selection must not be null.");

            }

            // A valid contentType and action must be provided for chooser selection events.

            if (contentType == null || contentType.isBlank()

                    || action == null || action.isBlank()) {

                return;

            }

            // Verify if this package exists before reporting an event for it.

            if (mPackageManagerInternal.getPackageUid(packageName, 0, userId) < 0) {

                Slog.w(TAG, "Event report user selecting an invalid package");