fix action bar and menu

    Bug: 5077207
    Bug: 5097486
    cleaned up action bar items
    dynamically change menu items based on context
    bookmarks option added to nav bar menu
    new tab added to navbar menu
    find/addbookmark only on real pages
    removed new incognito tab from tab switcher action bar

Change-Id: I973f20a13bb7d9900041f717aff012e7a2c735b8
diff --git a/src/com/android/browser/UI.java b/src/com/android/browser/UI.java
index 2984d5c..bc4c0cf 100644
--- a/src/com/android/browser/UI.java
+++ b/src/com/android/browser/UI.java
@@ -99,6 +99,8 @@
 
     public boolean onPrepareOptionsMenu(Menu menu);
 
+    public void updateMenuState(Tab tab, Menu menu);
+
     public void onOptionsMenuOpened();
 
     public void onExtendedMenuOpened();