Call super.onAttached/onDetachedFromWindow

b/13342458

Change-Id: I0c68789c350bb252018691cff7975e0f49f0e10b
diff --git a/src/com/android/ex/chips/RecipientEditTextView.java b/src/com/android/ex/chips/RecipientEditTextView.java
index 9633587..4339b9e 100644
--- a/src/com/android/ex/chips/RecipientEditTextView.java
+++ b/src/com/android/ex/chips/RecipientEditTextView.java
@@ -327,11 +327,13 @@
 
     @Override
     protected void onDetachedFromWindow() {
+        super.onDetachedFromWindow();
         mAttachedToWindow = false;
     }
 
     @Override
     protected void onAttachedToWindow() {
+        super.onAttachedToWindow();
         mAttachedToWindow = true;
     }