Turn WallpaperPersisiter variable to package access level

Make WallpaperPersister variable being accessed in package access level

Bug: 155604540
Change-Id: I78337afc37d11c0df4d5a5e6ea81317d4354e159
diff --git a/src/com/android/wallpaper/picker/individual/IndividualPickerFragment.java b/src/com/android/wallpaper/picker/individual/IndividualPickerFragment.java
index 0f042ab..d265347 100755
--- a/src/com/android/wallpaper/picker/individual/IndividualPickerFragment.java
+++ b/src/com/android/wallpaper/picker/individual/IndividualPickerFragment.java
@@ -168,6 +168,7 @@
         void onWallpaperSelected(int position);
     }
 
+    WallpaperPersister mWallpaperPersister;
     WallpaperPreferences mWallpaperPreferences;
     WallpaperChangedNotifier mWallpaperChangedNotifier;
     RecyclerView mImageGrid;
@@ -254,7 +255,6 @@
     };
 
     private WallpaperSetter mWallpaperSetter;
-    private WallpaperPersister mWallpaperPersister;
     private WallpaperInfo mAppliedWallpaperInfo;
     private WallpaperManager mWallpaperManager;
     private int mWallpaperDestination;