Fixing issue where landscape delete button is not centered. (Bug 6493651)

Change-Id: I782351da2daf511a79e5c9f1d3cef90bec2ca6d1

src/com/android/launcher2/ButtonDropTarget.java

@@ -20,6 +20,7 @@ import android.content.Context;
 import android.content.res.Resources;
 import android.graphics.PointF;
 import android.graphics.Rect;
+import android.graphics.drawable.Drawable;
 import android.util.AttributeSet;
 import android.widget.TextView;
 
@@ -68,6 +69,16 @@ public class ButtonDropTarget extends TextView implements DropTarget, DragContro
         mSearchDropTargetBar = searchDropTargetBar;
     }
 
+    protected Drawable getCurrentDrawable() {
+        Drawable[] drawables = getCompoundDrawables();
+        for (int i = 0; i < drawables.length; ++i) {
+            if (drawables[i] != null) {
+                return drawables[i];
+            }
+        }
+        return null;
+    }
+
     public void onDrop(DragObject d) {
     }