Backed out 2 changesets (bug 1329032) for failures a=backout

Backed out changeset 16c4f0df527d (bug 1329032)
Backed out changeset 54f7bfe3ca11 (bug 1329032)

MozReview-Commit-ID: ChGyTdJvT8N

toolkit/components/remotebrowserutils/RemoteWebNavigation.js

@@ -11,8 +11,6 @@ XPCOMUtils.defineLazyModuleGetter(this, "Services",
   "resource://gre/modules/Services.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "NetUtil",
   "resource://gre/modules/NetUtil.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "Utils",
-  "resource://gre/modules/sessionstore/Utils.jsm");
 
 function makeURI(url) {
   return Services.io.newURI(url);
@@ -75,7 +73,7 @@ RemoteWebNavigation.prototype = {
                             aPostData, aHeaders, null);
   },
   loadURIWithOptions(aURI, aLoadFlags, aReferrer, aReferrerPolicy,
-                     aPostData, aHeaders, aBaseURI, aTriggeringPrincipal) {
+                               aPostData, aHeaders, aBaseURI) {
     this._sendMessage("WebNavigation:LoadURI", {
       uri: aURI,
       flags: aLoadFlags,
@@ -84,9 +82,6 @@ RemoteWebNavigation.prototype = {
       postData: aPostData ? readInputStreamToString(aPostData) : null,
       headers: aHeaders ? readInputStreamToString(aHeaders) : null,
       baseURI: aBaseURI ? aBaseURI.spec : null,
-      triggeringPrincipal: aTriggeringPrincipal
-                           ? Utils.serializePrincipal(aTriggeringPrincipal)
-                           : null,
     });
   },
   setOriginAttributesBeforeLoading(aOriginAttributes) {