am d21301e6: Cancelling the stateannouncer when entering button drop target

* commit 'd21301e674377ecd72bd14f32b52c68fabcfd3be':
  Cancelling the stateannouncer when entering button drop target

src/com/android/launcher3/ButtonDropTarget.java

@@ -127,6 +127,9 @@ public abstract class ButtonDropTarget extends TextView
             mDrawable.setColorFilter(new ColorMatrixColorFilter(mCurrentFilter));
             setTextColor(mHoverColor);
         }
+        if (d.stateAnnouncer != null) {
+            d.stateAnnouncer.cancel();
+        }
         sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_SELECTED);
     }