Refactoring search bar animations.

- This refactoring ensures that LauncherStateTransition does not
  do its own animation on the QSB, and that all animations to the
  SearchDropTargetBar go through its own animators.

Bug: 22515084

Change-Id: Ia7d13c44d861eac7517076b52a9651a90911ed0a
diff --git a/src/com/android/launcher3/Folder.java b/src/com/android/launcher3/Folder.java
index 2e19f6e..535d1a4 100644
--- a/src/com/android/launcher3/Folder.java
+++ b/src/com/android/launcher3/Folder.java
@@ -275,7 +275,7 @@
 
     @Override
     public void enableAccessibleDrag(boolean enable) {
-        mLauncher.getSearchBar().enableAccessibleDrag(enable);
+        mLauncher.getSearchDropTargetBar().enableAccessibleDrag(enable);
         for (int i = 0; i < mContent.getChildCount(); i++) {
             mContent.getPageAt(i).enableAccessibleDrag(enable, CellLayout.FOLDER_ACCESSIBILITY_DRAG);
         }