Fixed tab bar view of SWE on tablets

Corrected the action bar theming and drawables for
browser tabs.

Change-Id: I7d3814c665e3dbbfb6d2b62684b17b308c8558a8
diff --git a/res/layout/tab_title.xml b/res/layout/tab_title.xml
index 57251d9..af78411 100644
--- a/res/layout/tab_title.xml
+++ b/res/layout/tab_title.xml
@@ -62,5 +62,5 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:contentDescription="@string/accessibility_button_closetab"
-        android:src="@drawable/ic_tab_close" />
+        android:src="@drawable/ic_action_stop" />
 </merge>