Use custom shape for Map controls layout

app/src/main/res/drawable/bg_map_button.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<inset xmlns:android="http://schemas.android.com/apk/res/android"
+       android:insetLeft="4dp"
+       android:insetTop="4dp"
+       android:insetRight="4dp"
+       android:insetBottom="4dp">
+
+    <ripple android:color="#33FFFFFF">
+        <item>
+            <shape android:shape="rectangle">
+                <solid android:color="#000000" />
+                <corners android:radius="3dp" />
+            </shape>
+        </item>
+    </ripple>
+
+</inset>