Add reader mode option in popup menu

Reader mode use the DOM distiller to load the distilled version of a webpage
Reader mode is disabled by default and will be available only with the use
of the command line flag "reader-mode"

Change-Id: Ide36057cae4e71b94e8118cc767f600cd610b82e
diff --git a/src/com/android/browser/NavTabView.java b/src/com/android/browser/NavTabView.java
index 0fc8dfd..c79dafc 100644
--- a/src/com/android/browser/NavTabView.java
+++ b/src/com/android/browser/NavTabView.java
@@ -90,6 +90,8 @@
         }
         if (mTab.isSnapshot()) {
             setTitleIcon(R.drawable.ic_suggest_history_normal);
+        } else  if (mTab.isDistilled()) {
+            setTitleIcon(R.drawable.ic_deco_reader_mode_normal);
         } else if (mTab.isPrivateBrowsingEnabled()) {
             mContent.setBackgroundResource(R.drawable.nav_tab_title_incognito);
             mTitle.setTextColor(getResources().getColor(R.color.white));