Save the static lock wallpaper's remote identifier.

Bug: 150840985
Change-Id: I2e767b2868564cb68d836a94a0f4923d3966dae9
diff --git a/src/com/android/wallpaper/module/DefaultWallpaperPersister.java b/src/com/android/wallpaper/module/DefaultWallpaperPersister.java
index 54393af..60527d0 100755
--- a/src/com/android/wallpaper/module/DefaultWallpaperPersister.java
+++ b/src/com/android/wallpaper/module/DefaultWallpaperPersister.java
@@ -784,6 +784,7 @@
                     mWallpaper.getActionIconRes(mAppContext));
             mWallpaperPreferences.setLockWallpaperCollectionId(
                     mWallpaper.getCollectionId(mAppContext));
+            mWallpaperPreferences.setLockWallpaperRemoteId(mWallpaper.getWallpaperId());
 
             // Save the lock wallpaper image's hash code as well for the sake of backup & restore
             // because WallpaperManager-generated IDs are specific to a physical device and