All Parcelable CREATOR fields are @NonNull.

If they were null, then the Parcelable would fail to work.

Bug: 126726802
Test: manual
Change-Id: I7929ffa2f20e5de1c8e68e8263cca99496e9d014
Exempt-From-Owner-Approval: Trivial API annotations
diff --git a/core/java/android/widget/ActionMenuPresenter.java b/core/java/android/widget/ActionMenuPresenter.java
index eb20a76..cfb93ec 100644
--- a/core/java/android/widget/ActionMenuPresenter.java
+++ b/core/java/android/widget/ActionMenuPresenter.java
@@ -830,7 +830,7 @@
             dest.writeInt(openSubMenuId);
         }
 
-        public static final Parcelable.Creator<SavedState> CREATOR
+        public static final @android.annotation.NonNull Parcelable.Creator<SavedState> CREATOR
                 = new Parcelable.Creator<SavedState>() {
             public SavedState createFromParcel(Parcel in) {
                 return new SavedState(in);