From 529258de44518a0164a6b369eaca006605dc8537 Mon Sep 17 00:00:00 2001
From: gorhill <rhill@raymondhill.net>
Date: Mon, 19 Jan 2015 18:42:58 -0500
Subject: [PATCH] started work on #105, #475, and possibly #510

---
 platform/chromium/vapi-background.js | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/platform/chromium/vapi-background.js b/platform/chromium/vapi-background.js
index 7efbc44..21d6c77 100644
--- a/platform/chromium/vapi-background.js
+++ b/platform/chromium/vapi-background.js
@@ -61,6 +61,14 @@ vAPI.tabs = {};
 
 /******************************************************************************/
 
+vAPI.isNoTabId = function(tabId) {
+    return tabId.toString() === '-1';
+};
+
+vAPI.noTabId = '-1';
+
+/******************************************************************************/
+
 vAPI.tabs.registerListeners = function() {
     if ( typeof this.onNavigation === 'function' ) {
         chrome.webNavigation.onCommitted.addListener(this.onNavigation);