TouchFeedbackDrawable is now RippleDrawable

Change-Id: I6d92fe9a58ee30e42639b5f427678170997ac039
diff --git a/InCallUI/res/drawable/btn_background.xml b/InCallUI/res/drawable/btn_background.xml
index 9a6c2f0..6a5592f 100644
--- a/InCallUI/res/drawable/btn_background.xml
+++ b/InCallUI/res/drawable/btn_background.xml
@@ -18,7 +18,7 @@
 <!-- Background resource for "compound buttons" in the in-call UI.
      These buttons have two states (checked and unchecked), and
      show a blue bar along the bottom edge when checked. -->
-<touch-feedback xmlns:android="http://schemas.android.com/apk/res/android"
+<ripple xmlns:android="http://schemas.android.com/apk/res/android"
     android:tint="@color/incall_accent_color"
     android:pinned="true">
     <item>
@@ -31,4 +31,4 @@
 
         </selector>
     </item>
-</touch-feedback>
+</ripple>