Add touch highlight to contact photos

res/drawable/contact_photo_background.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_pressed="true">
+        <shape android:shape="oval">
+            <solid android:color="@color/touch_highlight" />
+        </shape>
+    </item>
+
+    <item android:drawable="@android:color/transparent" />
+</selector>