adjust url bar for portrait large screen

      Bug: 4515354
      Original bug: 4335356
      hand picked the changes into the new code

Change-Id: I54b69a35660a5a38f41486c974c1cea171ee5d5e
diff --git a/res/values/bools.xml b/res/values/bools.xml
index 6217de1..55f8242 100644
--- a/res/values/bools.xml
+++ b/res/values/bools.xml
@@ -13,4 +13,5 @@
 <resources
     xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
     <bool name="isTablet">false</bool>
+    <bool name="hide_nav_buttons">true</bool>
 </resources>