Improving widget handling for pinItemRequest

> Preloading widget view while dragging for smoother
  transition
> Skipping config activity and sending confirmation to
  the caller when widget is dropped

Bug: 33584624
Change-Id: Ib23e5964298296d12d9c93f38aefdf924a07368e

src/com/android/launcher3/Launcher.java

@@ -2109,7 +2109,7 @@ public class Launcher extends BaseActivity
     private void addAppWidgetFromDrop(PendingAddWidgetInfo info) {
         AppWidgetHostView hostView = info.boundWidget;
         int appWidgetId;
-        WidgetAddFlowHandler addFlowHandler = info.getHander();
+        WidgetAddFlowHandler addFlowHandler = info.getHandler();
         if (hostView != null) {
             // In the case where we've prebound the widget, we remove it from the DragLayer
             if (LOGD) {