Migrating to android-x

Bug: 112610679
Change-Id: I89b6c4e7852c89f893de5ce091b94b6894649091
diff --git a/src/com/android/wallpaper/picker/CurrentWallpaperBottomSheetPresenter.java b/src/com/android/wallpaper/picker/CurrentWallpaperBottomSheetPresenter.java
index 7ea6fef..5190ec0 100755
--- a/src/com/android/wallpaper/picker/CurrentWallpaperBottomSheetPresenter.java
+++ b/src/com/android/wallpaper/picker/CurrentWallpaperBottomSheetPresenter.java
@@ -15,7 +15,7 @@
  */
 package com.android.wallpaper.picker;
 
-import android.support.annotation.Nullable;
+import androidx.annotation.Nullable;
 
 /**
  * Interface for a presenter class which displays the currently set wallpaper(s) in the view.