Add slight drop shadow to slide up / slide down answer button text

res/layout/webrtc_answer_decline_button.xml

@@ -54,6 +54,10 @@
               android:layout_marginBottom="19dp"
               android:textColor="@color/gray20"
               android:textStyle="italic"
+              android:shadowColor="#94000000"
+              android:shadowDx="2"
+              android:shadowDy="2"
+              android:shadowRadius="4"
               android:text="@string/webrtc_answer_decline_button__swipe_up_to_answer"/>
 
     <ImageView android:id="@+id/answer"
@@ -73,6 +77,10 @@
               android:layout_marginTop="16dp"
               android:textStyle="italic"
               android:textColor="@color/gray20"
+              android:shadowColor="#94000000"
+              android:shadowDx="2"
+              android:shadowDy="2"
+              android:shadowRadius="4"
               android:text="@string/webrtc_answer_decline_button__swipe_down_to_reject"/>