diff -r 000000000000 -r 6474c204b198 browser/metro/components/BrowserStartup.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/metro/components/BrowserStartup.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,121 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+const Cc = Components.classes;
+const Ci = Components.interfaces;
+const Cu = Components.utils;
+
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+Cu.import("resource://gre/modules/Services.jsm");
+
+XPCOMUtils.defineLazyModuleGetter(this, "PlacesUtils",
+                                  "resource://gre/modules/PlacesUtils.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "NetUtil",
+                                  "resource://gre/modules/NetUtil.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "Task",
+                                  "resource://gre/modules/Task.jsm");
+
+// Custom factory object to ensure that we're a singleton
+const BrowserStartupServiceFactory = {
+  _instance: null,
+  createInstance: function (outer, iid) {
+    if (outer != null)
+      throw Components.results.NS_ERROR_NO_AGGREGATION;
+    return this._instance || (this._instance = new BrowserStartup());
+  }
+};
+
+function BrowserStartup() {
+  this._init();
+}
+
+BrowserStartup.prototype = {
+  // for XPCOM
+  classID: Components.ID("{1d542abc-c88b-4636-a4ef-075b49806317}"),
+
+  QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver, Ci.nsISupportsWeakReference]),
+
+  _xpcom_factory: BrowserStartupServiceFactory,
+
+  _init: function() {
+    Services.obs.addObserver(this, "places-init-complete", false);
+    Services.obs.addObserver(this, "final-ui-startup", false);
+  },
+
+  _initDefaultBookmarks: function() {
+    // We must instantiate the history service since it will tell us if we
+    // need to import or restore bookmarks due to first-run, corruption or
+    // forced migration (due to a major schema change).
+    let histsvc = Cc["@mozilla.org/browser/nav-history-service;1"].
+                  getService(Ci.nsINavHistoryService);
+
+    // If the database is corrupt or has been newly created we should
+    // import bookmarks.
+    let databaseStatus = histsvc.databaseStatus;
+    let importBookmarks = databaseStatus == histsvc.DATABASE_STATUS_CREATE ||
+                          databaseStatus == histsvc.DATABASE_STATUS_CORRUPT;
+
+    if (!importBookmarks) {
+      // Check to see whether "mobile" root already exists. This is to handle
+      // existing profiles created with pre-1.0 builds (which won't have mobile
+      // bookmarks root). We can remove this eventually when we stop
+      // caring about users migrating to current builds with pre-1.0 profiles.
+      let annos = Cc["@mozilla.org/browser/annotation-service;1"].
+                  getService(Ci.nsIAnnotationService);
+      let metroRootItems = annos.getItemsWithAnnotation("metro/bookmarksRoot", {});
+      if (metroRootItems.length > 0)
+        return; // no need to do initial import
+    }
+
+    Cu.import("resource://gre/modules/BookmarkJSONUtils.jsm");
+
+    Task.spawn(function() {
+      yield BookmarkJSONUtils.importFromURL("chrome://browser/locale/bookmarks.json", false);
+
+      // Create the new smart bookmark.
+      const MAX_RESULTS = 10;
+      const SMART_BOOKMARKS_ANNO = "Places/SmartBookmark";
+
+      // Place the Metro folder at the end of the smart bookmarks list.
+      let maxIndex =  Math.max.apply(null,
+        PlacesUtils.annotations.getItemsWithAnnotation(SMART_BOOKMARKS_ANNO).map(id => {
+          return PlacesUtils.bookmarks.getItemIndex(id);
+        }));
+      let smartBookmarkId =
+        PlacesUtils.bookmarks.insertBookmark(PlacesUtils.bookmarksMenuFolderId,
+                                             NetUtil.newURI("place:folder=" +
+                                                            PlacesUtils.annotations.getItemsWithAnnotation('metro/bookmarksRoot', {})[0] +
+                                                            "&queryType=" +
+                                                            Ci.nsINavHistoryQueryOptions.QUERY_TYPE_BOOKMARKS +
+                                                            "&sort=" +
+                                                            Ci.nsINavHistoryQueryOptions.SORT_BY_DATEADDED_DESCENDING +
+                                                            "&maxResults=" + MAX_RESULTS +
+                                                            "&excludeQueries=1"),
+                                             maxIndex + 1,
+                                             PlacesUtils.getString("windows8TouchTitle"));
+      PlacesUtils.annotations.setItemAnnotation(smartBookmarkId,
+                                                SMART_BOOKMARKS_ANNO,
+                                                "Windows8Touch", 0,
+                                                PlacesUtils.annotations.EXPIRE_NEVER);
+    });
+  },
+
+  _startupActions: function() {
+  },
+
+  // nsIObserver
+  observe: function(aSubject, aTopic, aData) {
+    switch (aTopic) {
+      case "places-init-complete":
+        Services.obs.removeObserver(this, "places-init-complete");
+        this._initDefaultBookmarks();
+        break;
+      case "final-ui-startup":
+        Services.obs.removeObserver(this, "final-ui-startup");
+        this._startupActions();
+        break;
+    }
+  }
+};
+
+this.NSGetFactory = XPCOMUtils.generateNSGetFactory([BrowserStartup]);