3 files changed, 17 insertions, 6 deletions
diff --git a/browser/components/sessionstore/SessionHistory.jsm b/browser/components/sessionstore/SessionHistory.jsm
index aa9c10379..3d28d87db 100644
--- a/browser/components/sessionstore/SessionHistory.jsm
+++ b/browser/components/sessionstore/SessionHistory.jsm
@@ -95,7 +95,10 @@ var SessionHistoryInternal = {
       // record it. For about:blank we explicitly want an empty array without
       // an 'index' property to denote that there are no history entries.
       if (uri != "about:blank" || (body && body.hasChildNodes())) {
-        data.entries.push({ url: uri });
+        data.entries.push({
+          url: uri,
+          triggeringPrincipal_base64: Utils.SERIALIZED_SYSTEMPRINCIPAL
+        });
         data.index = 1;
       }
     }
diff --git a/browser/components/sessionstore/SessionMigration.jsm b/browser/components/sessionstore/SessionMigration.jsm
index ff339eba9..1aa22f1a9 100644
--- a/browser/components/sessionstore/SessionMigration.jsm
+++ b/browser/components/sessionstore/SessionMigration.jsm
@@ -11,6 +11,9 @@ Cu.import("resource://gre/modules/XPCOMUtils.jsm", this);
 Cu.import("resource://gre/modules/Task.jsm", this);
 Cu.import("resource://gre/modules/osfile.jsm", this);
 
+XPCOMUtils.defineLazyModuleGetter(this, "Utils",
+  "resource://gre/modules/sessionstore/Utils.jsm");
+
 // An encoder to UTF-8.
 XPCOMUtils.defineLazyGetter(this, "gEncoder", function () {
   return new TextEncoder();
@@ -27,7 +30,7 @@ var SessionMigrationInternal = {
    * only contain:
    * - open windows
    *   - with tabs
-   *     - with history entries with only title, url
+   *     - with history entries with only title, url, triggeringPrincipal
    *     - with pinned state
    *     - with tab group info (hidden + group id)
    *     - with selected tab info
@@ -45,9 +48,11 @@ var SessionMigrationInternal = {
       var win = {extData: {}};
       win.tabs = oldWin.tabs.map(function(oldTab) {
         var tab = {};
-        // Keep only titles and urls for history entries
+        // Keep only titles, urls and triggeringPrincipals for history entries
         tab.entries = oldTab.entries.map(function(entry) {
-          return {url: entry.url, title: entry.title};
+          return { url: entry.url,
+                   triggeringPrincipal_base64: entry.triggeringPrincipal_base64,
+                   title: entry.title };
         });
         tab.index = oldTab.index;
         tab.hidden = oldTab.hidden;
@@ -60,7 +65,8 @@ var SessionMigrationInternal = {
     });
     let url = "about:welcomeback";
     let formdata = {id: {sessionData: state}, url};
-    return {windows: [{tabs: [{entries: [{url}], formdata}]}]};
+    let entry = { url, triggeringPrincipal_base64: Utils.SERIALIZED_SYSTEMPRINCIPAL };
+    return { windows: [{ tabs: [{ entries: [ entry ], formdata}]}]};
   },
   /**
    * Asynchronously read session restore state (JSON) from a path
diff --git a/browser/components/sessionstore/SessionStore.jsm b/browser/components/sessionstore/SessionStore.jsm
index 93e21357f..6b30943f3 100644
--- a/browser/components/sessionstore/SessionStore.jsm
+++ b/browser/components/sessionstore/SessionStore.jsm
@@ -603,12 +603,14 @@ var SessionStoreInternal = {
               // replace the crashed session with a restore-page-only session
               let url = "about:sessionrestore";
               let formdata = {id: {sessionData: state}, url};
-              state = { windows: [{ tabs: [{ entries: [{url}], formdata }] }] };
+              let entry = {url, triggeringPrincipal_base64: Utils.SERIALIZED_SYSTEMPRINCIPAL };
+              state = { windows: [{ tabs: [{ entries: [entry], formdata }] }] };
             } else if (this._hasSingleTabWithURL(state.windows,
                                                  "about:welcomeback")) {
               // On a single about:welcomeback URL that crashed, replace about:welcomeback
               // with about:sessionrestore, to make clear to the user that we crashed.
               state.windows[0].tabs[0].entries[0].url = "about:sessionrestore";
+              state.windows[0].tabs[0].entries[0].triggeringPrincipal_base64 = Utils.SERIALIZED_SYSTEMPRINCIPAL;
             }
           }