From 78bdf9e1be0a23828d04e35e09a43a0367d62a5d Mon Sep 17 00:00:00 2001
From: Tim Taubert <tim.taubert@gmx.de>
Date: Wed, 11 Apr 2012 21:49:44 +0200
Subject: [PATCH] Bug 726347 - [Page Thumbnails] add preference to disable
 capturing thumbnails in the background; r=dao

---
 browser/base/content/browser-thumbnails.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/browser/base/content/browser-thumbnails.js b/browser/base/content/browser-thumbnails.js
index f7fda70b356a..3c37cc7625b5 100644
--- a/browser/base/content/browser-thumbnails.js
+++ b/browser/base/content/browser-thumbnails.js
@@ -26,6 +26,11 @@ let gBrowserThumbnails = {
   _tabEvents: ["TabClose", "TabSelect"],
 
   init: function Thumbnails_init() {
+    try {
+      if (Services.prefs.getBoolPref("browser.pagethumbnails.capturing_disabled"))
+        return;
+    } catch (e) {}
+
     gBrowser.addTabsProgressListener(this);
 
     this._tabEvents.forEach(function (aEvent) {