Add override to WallpaperManager.peekBitmapDimensions with which param

This creates the method stub; implementation will be in master.
Bug: 253481667
Test: TreeHugger

Change-Id: I99fcf70717e5e0bacd303e9d7caee466d218a98a

core/java/android/app/WallpaperManager.java

@@ -1132,11 +1132,25 @@ public class WallpaperManager {
      * @return the dimensions of system wallpaper
      * @hide
      */
+    @Nullable
     public Rect peekBitmapDimensions() {
         return sGlobals.peekWallpaperDimensions(
                 mContext, true /* returnDefault */, mContext.getUserId());
     }
 
+    /**
+     * Peek the dimensions of given wallpaper of the user without decoding it.
+     *
+     * @param which Wallpaper type. Must be either {@link #FLAG_SYSTEM} or
+     *     {@link #FLAG_LOCK}.
+     * @return the dimensions of system wallpaper
+     * @hide
+     */
+    @Nullable
+    public Rect peekBitmapDimensions(@SetWallpaperFlags int which) {
+        return peekBitmapDimensions();
+    }
+
     /**
      * Get an open, readable file descriptor to the given wallpaper image file.
      * The caller is responsible for closing the file descriptor when done ingesting the file.