Removing redudntant objects from BgDataModel

Bug: 390572144
Flag: EXEMPT refactor
Test: Updated model tests
Change-Id: Ied8a0bfdbfd324b9fb05724f1fcf67238aa37d16

src/com/android/launcher3/util/IntSparseArrayMap.java

@@ -19,6 +19,8 @@ package com.android.launcher3.util;
 import android.util.SparseArray;
 
 import java.util.Iterator;
+import java.util.stream.Stream;
+import java.util.stream.StreamSupport;
 
 /**
  * Extension of {@link SparseArray} with some utility methods.
@@ -43,6 +45,10 @@ public class IntSparseArrayMap<E> extends SparseArray<E> implements Iterable<E>
         return new ValueIterator();
     }
 
+    public Stream<E> stream() {
+        return StreamSupport.stream(spliterator(), false);
+    }
+
     @Thunk class ValueIterator implements Iterator<E> {
 
         private int mNextIndex = 0;