--- a/browser/base/content/pageinfo/pageInfo.js
+++ b/browser/base/content/pageinfo/pageInfo.js
@@ -676,17 +676,17 @@ function saveMedia() {
       var titleKey = "SaveImageTitle";
 
       if (item instanceof HTMLVideoElement)
         titleKey = "SaveVideoTitle";
       else if (item instanceof HTMLAudioElement)
         titleKey = "SaveAudioTitle";
 
       saveURL(url, null, titleKey, false, false, makeURI(item.baseURI),
-              null, gDocInfo.isContentWindowPrivate);
+              null, gDocInfo.isContentWindowPrivate, gDocInfo.principal);
     }
   } else {
     selectSaveFolder(function(aDirectory) {
       if (aDirectory) {
         var saveAnImage = function(aURIString, aChosenData, aBaseURI) {
           uniqueFile(aChosenData.file);
           internalSave(aURIString, null, null, null, null, false, "SaveImageTitle",
                        aChosenData, aBaseURI, null, false, null,

--- a/dom/webbrowserpersist/nsWebBrowserPersist.cpp
+++ b/dom/webbrowserpersist/nsWebBrowserPersist.cpp
@@ -1337,16 +1337,17 @@ nsresult nsWebBrowserPersist::SaveURIInt
     nsIURI *aURI, nsIPrincipal* aTriggeringPrincipal,
     uint32_t aCacheKey, nsIURI *aReferrer,
     uint32_t aReferrerPolicy, nsIInputStream *aPostData,
     const char *aExtraHeaders, nsIURI *aFile,
     bool aCalcFileExt, bool aIsPrivate)
 {
     NS_ENSURE_ARG_POINTER(aURI);
     NS_ENSURE_ARG_POINTER(aFile);
+    NS_ENSURE_ARG_POINTER(aTriggeringPrincipal);
 
     nsresult rv = NS_OK;
 
     mURI = aURI;
 
     nsLoadFlags loadFlags = nsIRequest::LOAD_NORMAL;
     if (mPersistFlags & PERSIST_FLAGS_BYPASS_CACHE)
     {