[AllApps] Fix ConcurrentModificationException in AppPredictionRow

Bug: 190574986
Test: presubmit
Change-Id: Ic74d1d466e8c7b0ecb870dd5ab47dc91ba71a01e
diff --git a/quickstep/src/com/android/launcher3/appprediction/PredictionRowView.java b/quickstep/src/com/android/launcher3/appprediction/PredictionRowView.java
index 6afbf9a..5242b3c 100644
--- a/quickstep/src/com/android/launcher3/appprediction/PredictionRowView.java
+++ b/quickstep/src/com/android/launcher3/appprediction/PredictionRowView.java
@@ -48,6 +48,7 @@
 
 import java.util.ArrayList;
 import java.util.List;
+import java.util.stream.Collectors;
 
 @TargetApi(Build.VERSION_CODES.P)
 public class PredictionRowView extends LinearLayout implements
@@ -170,10 +171,9 @@
     private void applyPredictedApps(List<ItemInfo> items) {
         mPendingPredictedItems = null;
         mPredictedApps.clear();
-        items.stream()
+        mPredictedApps.addAll(items.stream()
                 .filter(itemInfo -> itemInfo instanceof WorkspaceItemInfo)
-                .map(itemInfo -> (WorkspaceItemInfo) itemInfo)
-                .forEach(mPredictedApps::add);
+                .map(itemInfo -> (WorkspaceItemInfo) itemInfo).collect(Collectors.toList()));
         applyPredictionApps();
     }