--- a/browser/components/newtab/aboutNewTabService.js
+++ b/browser/components/newtab/aboutNewTabService.js
@@ -21,23 +21,25 @@ const TOPIC_LOCALES_CHANGE = "intl:app-l
 const ACTIVITY_STREAM_LOCALES = "en-US ach an ar ast az be bg bn-BD bn-IN br bs ca cak crh cs cy da de dsb el en-CA en-GB eo es-AR es-CL es-ES es-MX et eu fa ff fi fr fy-NL ga-IE gd gl gn gu-IN he hi-IN hr hsb hu hy-AM ia id it ja ja-JP-mac ka kab kk km kn ko lij lo lt ltg lv mai mk ml mr ms my nb-NO ne-NP nl nn-NO oc pa-IN pl pt-BR pt-PT rm ro ru si sk sl sq sr sv-SE ta te th tl tr uk ur uz vi zh-CN zh-TW".split(" ");
 
 const ABOUT_URL = "about:newtab";
 
 const IS_MAIN_PROCESS = Services.appinfo.processType === Services.appinfo.PROCESS_TYPE_DEFAULT;
 
 const IS_RELEASE_OR_BETA = AppConstants.RELEASE_OR_BETA;
 
+const PREF_SEPARATE_PRIVILEGED_CONTENT_PROCESS = "browser.tabs.remote.separatePrivilegedContentProcess";
 const PREF_ACTIVITY_STREAM_PRERENDER_ENABLED = "browser.newtabpage.activity-stream.prerender";
 const PREF_ACTIVITY_STREAM_DEBUG = "browser.newtabpage.activity-stream.debug";
 
 
 function AboutNewTabService() {
   Services.obs.addObserver(this, TOPIC_APP_QUIT);
   Services.obs.addObserver(this, TOPIC_LOCALES_CHANGE);
+  Services.prefs.addObserver(PREF_SEPARATE_PRIVILEGED_CONTENT_PROCESS, this);
   Services.prefs.addObserver(PREF_ACTIVITY_STREAM_PRERENDER_ENABLED, this);
   if (!IS_RELEASE_OR_BETA) {
     Services.prefs.addObserver(PREF_ACTIVITY_STREAM_DEBUG, this);
   }
 
   // More initialization happens here
   this.toggleActivityStream(true);
   this.initialized = true;
@@ -80,32 +82,35 @@ function AboutNewTabService() {
  */
 AboutNewTabService.prototype = {
 
   _newTabURL: ABOUT_URL,
   _activityStreamEnabled: false,
   _activityStreamPrerender: false,
   _activityStreamPath: "",
   _activityStreamDebug: false,
+  _privilegedContentProcess: false,
   _overridden: false,
   willNotifyUser: false,
 
   classID: Components.ID("{dfcd2adc-7867-4d3a-ba70-17501f208142}"),
   QueryInterface: ChromeUtils.generateQI([
     Ci.nsIAboutNewTabService,
     Ci.nsIObserver
   ]),
   _xpcom_categories: [{
     service: true
   }],
 
   observe(subject, topic, data) {
     switch (topic) {
       case "nsPref:changed":
-        if (data === PREF_ACTIVITY_STREAM_PRERENDER_ENABLED) {
+        if (data === PREF_SEPARATE_PRIVILEGED_CONTENT_PROCESS) {
+          this._privilegedContentProcess = Services.prefs.getBoolPref(PREF_SEPARATE_PRIVILEGED_CONTENT_PROCESS);
+        } else if (data === PREF_ACTIVITY_STREAM_PRERENDER_ENABLED) {
           this._activityStreamPrerender = Services.prefs.getBoolPref(PREF_ACTIVITY_STREAM_PRERENDER_ENABLED);
           this.notifyChange();
         } else if (!IS_RELEASE_OR_BETA && data === PREF_ACTIVITY_STREAM_DEBUG) {
           this._activityStreamDebug = Services.prefs.getBoolPref(PREF_ACTIVITY_STREAM_DEBUG, false);
           this.updatePrerenderedPath();
           this.notifyChange();
         }
         break;
@@ -132,26 +137,26 @@ AboutNewTabService.prototype = {
    * This will only act if there is a change of state and if not overridden.
    *
    * @returns {Boolean} Returns if there has been a state change
    *
    * @param {Boolean}   stateEnabled    activity stream enabled state to set to
    * @param {Boolean}   forceState      force state change
    */
   toggleActivityStream(stateEnabled, forceState = false) {
-
     if (!forceState && (this.overridden || stateEnabled === this.activityStreamEnabled)) {
       // exit there is no change of state
       return false;
     }
     if (stateEnabled) {
       this._activityStreamEnabled = true;
     } else {
       this._activityStreamEnabled = false;
     }
+    this._privilegedContentProcess = Services.prefs.getBoolPref(PREF_SEPARATE_PRIVILEGED_CONTENT_PROCESS);
     this._activityStreamPrerender = Services.prefs.getBoolPref(PREF_ACTIVITY_STREAM_PRERENDER_ENABLED);
     if (!IS_RELEASE_OR_BETA) {
       this._activityStreamDebug = Services.prefs.getBoolPref(PREF_ACTIVITY_STREAM_DEBUG, false);
     }
     this.updatePrerenderedPath();
     this._newtabURL = ABOUT_URL;
     return true;
   },
@@ -240,16 +245,17 @@ AboutNewTabService.prototype = {
   },
 
   uninit() {
     if (!this.initialized) {
       return;
     }
     Services.obs.removeObserver(this, TOPIC_APP_QUIT);
     Services.obs.removeObserver(this, TOPIC_LOCALES_CHANGE);
+    Services.prefs.removeObserver(PREF_SEPARATE_PRIVILEGED_CONTENT_PROCESS, this);
     Services.prefs.removeObserver(PREF_ACTIVITY_STREAM_PRERENDER_ENABLED, this);
     if (!IS_RELEASE_OR_BETA) {
       Services.prefs.removeObserver(PREF_ACTIVITY_STREAM_DEBUG, this);
     }
     this.initialized = false;
   }
 };