fix phone titlebar

Change-Id: I76908b1cf4eb61f64c3531c75e589f1b80bdaaba
diff --git a/res/layout/nav_tab_view.xml b/res/layout/nav_tab_view.xml
index f9e471b..439eb89 100644
--- a/res/layout/nav_tab_view.xml
+++ b/res/layout/nav_tab_view.xml
@@ -30,13 +30,10 @@
         android:layout_height="@dimen/toolbar_height" >
         <ImageView
             android:id="@+id/favicon"
-            android:layout_width="22dip"
-            android:layout_height="22dip"
+            android:layout_width="20dip"
+            android:layout_height="20dip"
             android:layout_marginLeft="4dip"
             android:layout_marginRight="4dip"
-            android:background="@color/white"
-            android:scaleType="center"
-            android:src="@drawable/app_web_browser_sm"
             android:layout_gravity="center_vertical" />
         <TextView
             android:id="@+id/title"