[PALEMOON] Fix: The profile resseting - partially

https://github.com/MoonchildProductions/UXP/commit/aaf3409c46a5e472bc539a6ad5902f886c980e1f

- Revert migration
- Partially
- no manual migration from Places
- no migration from other browsers
- no the cmd `-migration`
- Fix migration files (`// Tycho:`)
- Something in the last commit (a typo)

9 files changed, 805 insertions, 13 deletions

diff --git a/application/palemoon/components/migration/BrowserProfileMigrators.manifest b/application/palemoon/components/migration/BrowserProfileMigrators.manifest
new file mode 100644
index 000000000..d2bf0901d
--- /dev/null
+++ b/application/palemoon/components/migration/BrowserProfileMigrators.manifest
@@ -0,0 +1,4 @@
+component {6F8BB968-C14F-4D6F-9733-6C6737B35DCE} ProfileMigrator.js
+contract @mozilla.org/toolkit/profile-migrator;1 {6F8BB968-C14F-4D6F-9733-6C6737B35DCE}
+component {91185366-ba97-4438-acba-48deaca63386} FirefoxProfileMigrator.js
+contract @mozilla.org/profile/migrator;1?app=browser&type=firefox {91185366-ba97-4438-acba-48deaca63386}
diff --git a/application/palemoon/components/migration/FirefoxProfileMigrator.js b/application/palemoon/components/migration/FirefoxProfileMigrator.js
new file mode 100644
index 000000000..9101974cf
--- /dev/null
+++ b/application/palemoon/components/migration/FirefoxProfileMigrator.js
@@ -0,0 +1,126 @@
+/* -*- Mode: js; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: sw=2 ts=2 sts=2 et */
+ /* 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/. */
+
+"use strict";
+
+/*
+ * Migrates from a Pale Moon profile in a lossy manner in order to clean up a
+ * user's profile.  Data is only migrated where the benefits outweigh the
+ * potential problems caused by importing undesired/invalid configurations
+ * from the source profile.
+ */
+
+Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
+Components.utils.import("resource:///modules/MigrationUtils.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "PlacesBackups",
+                                  "resource://gre/modules/PlacesBackups.jsm");
+
+function FirefoxProfileMigrator() { }
+
+FirefoxProfileMigrator.prototype = Object.create(MigratorPrototype);
+
+FirefoxProfileMigrator.prototype._getAllProfiles = function () {
+  let allProfiles = new Map();
+  let profiles =
+    Components.classes["@mozilla.org/toolkit/profile-service;1"]
+              .getService(Components.interfaces.nsIToolkitProfileService)
+              .profiles;
+  while (profiles.hasMoreElements()) {
+    let profile = profiles.getNext().QueryInterface(Components.interfaces.nsIToolkitProfile);
+    let rootDir = profile.rootDir;
+
+    if (rootDir.exists() && rootDir.isReadable() &&
+        !rootDir.equals(MigrationUtils.profileStartup.directory)) {
+      allProfiles.set(profile.name, rootDir);
+    }
+  }
+  return allProfiles;
+};
+
+function sorter(a, b) {
+  return a.id.toLocaleLowerCase().localeCompare(b.id.toLocaleLowerCase());
+}
+
+Object.defineProperty(FirefoxProfileMigrator.prototype, "sourceProfiles", {
+  get: function() {
+    // Tycho: return [{id: x, name: x} for (x of this._getAllProfiles().keys())].sort(sorter);
+    let items = [];
+    for (let x of this._getAllProfiles().keys()) {
+      items.push({id: x, name: x});
+    }
+    return items.sort(sorter);
+  }
+});
+
+FirefoxProfileMigrator.prototype.getResources = function(aProfile) {
+  let sourceProfileDir = aProfile ? this._getAllProfiles().get(aProfile.id) :
+    Components.classes["@mozilla.org/toolkit/profile-service;1"]
+              .getService(Components.interfaces.nsIToolkitProfileService)
+              .selectedProfile.rootDir;
+  if (!sourceProfileDir || !sourceProfileDir.exists() ||
+      !sourceProfileDir.isReadable())
+    return null;
+
+  // Being a startup-only migrator, we can rely on
+  // MigrationUtils.profileStartup being set.
+  let currentProfileDir = MigrationUtils.profileStartup.directory;
+
+  // Surely data cannot be imported from the current profile.
+  if (sourceProfileDir.equals(currentProfileDir))
+    return null;
+
+  let getFileResource = function(aMigrationType, aFileNames) {
+    let files = [];
+    for (let fileName of aFileNames) {
+      let file = sourceProfileDir.clone();
+      file.append(fileName);
+
+      if (file.exists()) {
+        files.push(file);
+      }
+    }
+    if (!files.length) {
+      return null;
+    }
+    return {
+      type: aMigrationType,
+      migrate: function(aCallback) {
+        for (let file of files) {
+          file.copyTo(currentProfileDir, "");
+        }
+        aCallback(true);
+      }
+    };
+  };
+
+  let types = MigrationUtils.resourceTypes;
+  let places = getFileResource(types.HISTORY, ["places.sqlite", "places.sqlite-wal"]);
+  let cookies = getFileResource(types.COOKIES, ["cookies.sqlite", "cookies.sqlite-wal"]);
+  let passwords = getFileResource(types.PASSWORDS,
+                                  ["signons.sqlite", "logins.json", "key3.db"]);
+  let formData = getFileResource(types.FORMDATA, ["formhistory.sqlite"]);
+  let bookmarksBackups = getFileResource(types.OTHERDATA,
+    [PlacesBackups.profileRelativeFolderPath]);
+  let dictionary = getFileResource(types.OTHERDATA, ["persdict.dat"]);
+
+  /* Tycho:
+  return [r for each (r in [places, cookies, passwords, formData,
+                            dictionary, bookmarksBackups]) if (r)];
+  */
+  return [places, cookies, passwords, formData, dictionary, bookmarksBackups]
+         .filter(r => r);
+}
+
+Object.defineProperty(FirefoxProfileMigrator.prototype, "startupOnlyMigrator", {
+  get: function() true
+});
+
+
+FirefoxProfileMigrator.prototype.classDescription = "Firefox Profile Migrator";
+FirefoxProfileMigrator.prototype.contractID = "@mozilla.org/profile/migrator;1?app=browser&type=firefox";
+FirefoxProfileMigrator.prototype.classID = Components.ID("{91185366-ba97-4438-acba-48deaca63386}");
+
+this.NSGetFactory = XPCOMUtils.generateNSGetFactory([FirefoxProfileMigrator]);
diff --git a/application/palemoon/components/migration/MigrationUtils.jsm b/application/palemoon/components/migration/MigrationUtils.jsm
index 4461b8af0..243bf098a 100644
--- a/application/palemoon/components/migration/MigrationUtils.jsm
+++ b/application/palemoon/components/migration/MigrationUtils.jsm
@@ -177,12 +177,11 @@ this.MigratorPrototype = {
    */
   getMigrateData: function MP_getMigrateData(aProfile) {
     // Tycho: let types = [r.type for each (r in this._getMaybeCachedResources(aProfile))];
-    let types = [];
-
-    for each (r in this._getMaybeCachedResources(aProfile)) {
-      types.push(r.type);
+    let resources = this._getMaybeCachedResources(aProfile);
+    if (!resources) {
+      return [];
     }
-
+    let types = resources.map(r => r.type);
     return types.reduce(function(a, b) a |= b, 0);
   },
 
@@ -197,15 +196,10 @@ this.MigratorPrototype = {
     if (resources.length == 0)
       throw new Error("migrate called for a non-existent source");
 
-    if (aItems != Ci.nsIBrowserProfileMigrator.ALL)
+    if (aItems != Ci.nsIBrowserProfileMigrator.ALL) {
       // Tycho: resources = [r for each (r in resources) if (aItems & r.type)];
-      resources = [];
-
-      for each (r in resources) {
-        if (aItems & r.type) {
-          resources.push(r);
-        }
-      }
+      resources = resources.filter(r => aItems & r.type);
+    }
 
     // Called either directly or through the bookmarks import callback.
     function doMigrate() {
diff --git a/application/palemoon/components/migration/ProfileMigrator.js b/application/palemoon/components/migration/ProfileMigrator.js
new file mode 100644
index 000000000..f67823bae
--- /dev/null
+++ b/application/palemoon/components/migration/ProfileMigrator.js
@@ -0,0 +1,21 @@
+/* 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/. */
+
+"use strict";
+
+Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
+Components.utils.import("resource:///modules/MigrationUtils.jsm");
+
+function ProfileMigrator() {
+}
+
+ProfileMigrator.prototype = {
+  migrate: MigrationUtils.startupMigration.bind(MigrationUtils),
+  QueryInterface: XPCOMUtils.generateQI([Components.interfaces.nsIProfileMigrator]),
+  classDescription: "Profile Migrator",
+  contractID: "@mozilla.org/toolkit/profile-migrator;1",
+  classID: Components.ID("6F8BB968-C14F-4D6F-9733-6C6737B35DCE")
+};
+
+this.NSGetFactory = XPCOMUtils.generateNSGetFactory([ProfileMigrator]);
diff --git a/application/palemoon/components/migration/content/migration.js b/application/palemoon/components/migration/content/migration.js
new file mode 100644
index 000000000..908354d72
--- /dev/null
+++ b/application/palemoon/components/migration/content/migration.js
@@ -0,0 +1,465 @@
+/* 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;
+
+const kIMig = Ci.nsIBrowserProfileMigrator;
+const kIPStartup = Ci.nsIProfileStartup;
+
+Cu.import("resource:///modules/MigrationUtils.jsm");
+
+var MigrationWizard = {
+  _source: "",                  // Source Profile Migrator ContractID suffix
+  _itemsFlags: kIMig.ALL,       // Selected Import Data Sources (16-bit bitfield)
+  _selectedProfile: null,       // Selected Profile name to import from
+  _wiz: null,
+  _migrator: null,
+  _autoMigrate: null,
+
+  init: function ()
+  {
+    var os = Components.classes["@mozilla.org/observer-service;1"]
+                       .getService(Components.interfaces.nsIObserverService);
+    os.addObserver(this, "Migration:Started", false);
+    os.addObserver(this, "Migration:ItemBeforeMigrate", false);
+    os.addObserver(this, "Migration:ItemAfterMigrate", false);
+    os.addObserver(this, "Migration:ItemError", false);
+    os.addObserver(this, "Migration:Ended", false);
+
+    this._wiz = document.documentElement;
+
+    if ("arguments" in window && window.arguments.length > 1) {
+      this._source = window.arguments[0];
+      this._migrator = window.arguments[1] instanceof kIMig ?
+                       window.arguments[1] : null;
+      this._autoMigrate = window.arguments[2].QueryInterface(kIPStartup);
+      this._skipImportSourcePage = window.arguments[3];
+      if (this._migrator && window.arguments[4]) {
+        let sourceProfiles = this._migrator.sourceProfiles;
+        this._selectedProfile = sourceProfiles.find(profile => profile.id == window.arguments[4]);
+      }
+
+      if (this._autoMigrate) {
+        // Show the "nothing" option in the automigrate case to provide an
+        // easily identifiable way to avoid migration and create a new profile.
+        var nothing = document.getElementById("nothing");
+        nothing.hidden = false;
+      }
+    }
+
+    this.onImportSourcePageShow();
+  },
+
+  uninit: function ()
+  {
+    var os = Components.classes["@mozilla.org/observer-service;1"]
+                       .getService(Components.interfaces.nsIObserverService);
+    os.removeObserver(this, "Migration:Started");
+    os.removeObserver(this, "Migration:ItemBeforeMigrate");
+    os.removeObserver(this, "Migration:ItemAfterMigrate");
+    os.removeObserver(this, "Migration:ItemError");
+    os.removeObserver(this, "Migration:Ended");
+    MigrationUtils.finishMigration();
+  },
+
+  // 1 - Import Source
+  onImportSourcePageShow: function ()
+  {
+    this._wiz.canRewind = false;
+
+    var selectedMigrator = null;
+
+    // Figure out what source apps are are available to import from:
+    var group = document.getElementById("importSourceGroup");
+    for (var i = 0; i < group.childNodes.length; ++i) {
+      var migratorKey = group.childNodes[i].id;
+      if (migratorKey != "nothing") {
+        var migrator = MigrationUtils.getMigrator(migratorKey);
+        if (migrator) {
+          // Save this as the first selectable item, if we don't already have
+          // one, or if it is the migrator that was passed to us.
+          if (!selectedMigrator || this._source == migratorKey)
+            selectedMigrator = group.childNodes[i];
+        } else {
+          // Hide this option
+          group.childNodes[i].hidden = true;
+        }
+      }
+    }
+
+    if (selectedMigrator)
+      group.selectedItem = selectedMigrator;
+    else {
+      // We didn't find a migrator, notify the user
+      document.getElementById("noSources").hidden = false;
+
+      this._wiz.canAdvance = false;
+
+      document.getElementById("importBookmarks").hidden = true;
+      document.getElementById("importAll").hidden = true;
+    }
+
+    // Advance to the next page if the caller told us to.
+    if (this._migrator && this._skipImportSourcePage) {
+      this._wiz.advance();
+      this._wiz.canRewind = false;
+    }
+  },
+  
+  onImportSourcePageAdvanced: function ()
+  {
+    var newSource = document.getElementById("importSourceGroup").selectedItem.id;
+    
+    if (newSource == "nothing") {
+      document.documentElement.cancel();
+      return false;
+    }
+    
+    if (!this._migrator || (newSource != this._source)) {
+      // Create the migrator for the selected source.
+      this._migrator = MigrationUtils.getMigrator(newSource);
+
+      this._itemsFlags = kIMig.ALL;
+      this._selectedProfile = null;
+    }
+    this._source = newSource;
+
+    // check for more than one source profile
+    var sourceProfiles = this._migrator.sourceProfiles;    
+    if (this._skipImportSourcePage) {
+      this._wiz.currentPage.next = "homePageImport";
+    }
+    else if (sourceProfiles && sourceProfiles.length > 1) {
+      this._wiz.currentPage.next = "selectProfile";
+    }
+    else {
+      if (this._autoMigrate)
+        this._wiz.currentPage.next = "homePageImport";
+      else
+        this._wiz.currentPage.next = "importItems";
+
+      if (sourceProfiles && sourceProfiles.length == 1)
+        this._selectedProfile = sourceProfiles[0];
+      else
+        this._selectedProfile = null;
+    }
+  },
+  
+  // 2 - [Profile Selection]
+  onSelectProfilePageShow: function ()
+  {
+    // Disabling this for now, since we ask about import sources in automigration
+    // too and don't want to disable the back button
+    // if (this._autoMigrate)
+    //   document.documentElement.getButton("back").disabled = true;
+      
+    var profiles = document.getElementById("profiles");
+    while (profiles.hasChildNodes()) 
+      profiles.removeChild(profiles.firstChild);
+    
+    // Note that this block is still reached even if the user chose 'From File'
+    // and we canceled the dialog.  When that happens, _migrator will be null.
+    if (this._migrator) {
+      var sourceProfiles = this._migrator.sourceProfiles;
+
+      for (let profile of sourceProfiles) {
+        var item = document.createElement("radio");
+        item.id = profile.id;
+        item.setAttribute("label", profile.name);
+        profiles.appendChild(item);
+      }
+    }
+    
+    profiles.selectedItem = this._selectedProfile ? document.getElementById(this._selectedProfile.id) : profiles.firstChild;
+  },
+  
+  onSelectProfilePageRewound: function ()
+  {
+    var profiles = document.getElementById("profiles");
+    this._selectedProfile = this._migrator.sourceProfiles.find(
+      profile => profile.id == profiles.selectedItem.id
+    ) || null;
+  },
+  
+  onSelectProfilePageAdvanced: function ()
+  {
+    var profiles = document.getElementById("profiles");
+    this._selectedProfile = this._migrator.sourceProfiles.find(
+      profile => profile.id == profiles.selectedItem.id
+    ) || null;
+
+    // If we're automigrating or just doing bookmarks don't show the item selection page
+    if (this._autoMigrate)
+      this._wiz.currentPage.next = "homePageImport";
+  },
+  
+  // 3 - ImportItems
+  onImportItemsPageShow: function ()
+  {
+    var dataSources = document.getElementById("dataSources");
+    while (dataSources.hasChildNodes())
+      dataSources.removeChild(dataSources.firstChild);
+
+    var items = this._migrator.getMigrateData(this._selectedProfile, this._autoMigrate);
+    for (var i = 0; i < 16; ++i) {
+      var itemID = (items >> i) & 0x1 ? Math.pow(2, i) : 0;
+      if (itemID > 0) {
+        var checkbox = document.createElement("checkbox");
+        checkbox.id = itemID;
+        checkbox.setAttribute("label", 
+          MigrationUtils.getLocalizedString(itemID + "_" + this._source));
+        dataSources.appendChild(checkbox);
+        if (!this._itemsFlags || this._itemsFlags & itemID)
+          checkbox.checked = true;
+      }
+    }
+  },
+
+  onImportItemsPageRewound: function ()
+  {
+    this._wiz.canAdvance = true;
+    this.onImportItemsPageAdvanced();
+  },
+
+  onImportItemsPageAdvanced: function ()
+  {
+    var dataSources = document.getElementById("dataSources");
+    this._itemsFlags = 0;
+    for (var i = 0; i < dataSources.childNodes.length; ++i) {
+      var checkbox = dataSources.childNodes[i];
+      if (checkbox.localName == "checkbox" && checkbox.checked)
+        this._itemsFlags |= parseInt(checkbox.id);
+    }
+  },
+  
+  onImportItemCommand: function (aEvent)
+  {
+    var items = document.getElementById("dataSources");
+    var checkboxes = items.getElementsByTagName("checkbox");
+
+    var oneChecked = false;
+    for (var i = 0; i < checkboxes.length; ++i) {
+      if (checkboxes[i].checked) {
+        oneChecked = true;
+        break;
+      }
+    }
+
+    this._wiz.canAdvance = oneChecked;
+  },
+
+  // 4 - Home Page Selection
+  onHomePageMigrationPageShow: function ()
+  {
+    // only want this on the first run
+    if (!this._autoMigrate) {
+      this._wiz.advance();
+      return;
+    }
+
+    var brandBundle = document.getElementById("brandBundle");
+    // These strings don't exist when not using official branding. If that's
+    // the case, just skip this page.
+    try {
+      var pageTitle = brandBundle.getString("homePageMigrationPageTitle");
+      var pageDesc = brandBundle.getString("homePageMigrationDescription");
+      var mainStr = brandBundle.getString("homePageSingleStartMain");
+    }
+    catch (e) {
+      this._wiz.advance();
+      return;
+    }
+
+    document.getElementById("homePageImport").setAttribute("label", pageTitle);
+    document.getElementById("homePageImportDesc").setAttribute("value", pageDesc);
+
+    this._wiz._adjustWizardHeader();
+
+    var singleStart = document.getElementById("homePageSingleStart");
+    singleStart.setAttribute("label", mainStr);
+    singleStart.setAttribute("value", "DEFAULT");
+
+    var source = null;
+    switch (this._source) {
+      case "firefox":
+        source = "sourceNameFirefox";
+        break;
+    }
+
+    // semi-wallpaper for crash when multiple profiles exist, since we haven't initialized mSourceProfile in places
+    this._migrator.getMigrateData(this._selectedProfile, this._autoMigrate);
+
+    var oldHomePageURL = this._migrator.sourceHomePageURL;
+
+    if (oldHomePageURL && source) {
+      var appName = MigrationUtils.getLocalizedString(source);
+      var oldHomePageLabel =
+        brandBundle.getFormattedString("homePageImport", [appName]);
+      var oldHomePage = document.getElementById("oldHomePage");
+      oldHomePage.setAttribute("label", oldHomePageLabel);
+      oldHomePage.setAttribute("value", oldHomePageURL);
+      oldHomePage.removeAttribute("hidden");
+    }
+    else {
+      // if we don't have at least two options, just advance
+      this._wiz.advance();
+    }
+  },
+
+  onHomePageMigrationPageAdvanced: function ()
+  {
+    // we might not have a selectedItem if we're in fallback mode
+    try {
+      var radioGroup = document.getElementById("homePageRadiogroup");
+
+      this._newHomePage = radioGroup.selectedItem.value;
+    } catch(ex) {}
+  },
+
+  // 5 - Migrating
+  onMigratingPageShow: function ()
+  {
+    this._wiz.getButton("cancel").disabled = true;
+    this._wiz.canRewind = false;
+    this._wiz.canAdvance = false;
+    
+    // When automigrating, show all of the data that can be received from this source.
+    if (this._autoMigrate)
+      this._itemsFlags = this._migrator.getMigrateData(this._selectedProfile, this._autoMigrate);
+
+    this._listItems("migratingItems");
+    setTimeout(this.onMigratingMigrate, 0, this);
+  },
+
+  onMigratingMigrate: function (aOuter)
+  {
+    aOuter._migrator.migrate(aOuter._itemsFlags, aOuter._autoMigrate, aOuter._selectedProfile);
+  },
+  
+  _listItems: function (aID)
+  {
+    var items = document.getElementById(aID);
+    while (items.hasChildNodes())
+      items.removeChild(items.firstChild);
+
+    var brandBundle = document.getElementById("brandBundle");
+    var itemID;
+    for (var i = 0; i < 16; ++i) {
+      var itemID = (this._itemsFlags >> i) & 0x1 ? Math.pow(2, i) : 0;
+      if (itemID > 0) {
+        var label = document.createElement("label");
+        label.id = itemID + "_migrated";
+        try {
+          label.setAttribute("value",
+            MigrationUtils.getLocalizedString(itemID + "_" + this._source));
+          items.appendChild(label);
+        }
+        catch (e) {
+          // if the block above throws, we've enumerated all the import data types we
+          // currently support and are now just wasting time, break. 
+          break;
+        }
+      }
+    }
+  },
+  
+  observe: function (aSubject, aTopic, aData)
+  {
+    switch (aTopic) {
+    case "Migration:Started":
+      break;
+    case "Migration:ItemBeforeMigrate":
+      var label = document.getElementById(aData + "_migrated");
+      if (label)
+        label.setAttribute("style", "font-weight: bold");
+      break;
+    case "Migration:ItemAfterMigrate":
+      var label = document.getElementById(aData + "_migrated");
+      if (label)
+        label.removeAttribute("style");
+      break;
+    case "Migration:Ended":
+      if (this._autoMigrate) {
+        if (this._newHomePage) {
+          try {
+            // set homepage properly
+            var prefSvc = Components.classes["@mozilla.org/preferences-service;1"]
+                                    .getService(Components.interfaces.nsIPrefService);
+            var prefBranch = prefSvc.getBranch(null);
+
+            if (this._newHomePage == "DEFAULT") {
+              prefBranch.clearUserPref("browser.startup.homepage");
+            }
+            else {
+              var str = Components.classes["@mozilla.org/supports-string;1"]
+                                .createInstance(Components.interfaces.nsISupportsString);
+              str.data = this._newHomePage;
+              prefBranch.setComplexValue("browser.startup.homepage",
+                                         Components.interfaces.nsISupportsString,
+                                         str);
+            }
+
+            var dirSvc = Components.classes["@mozilla.org/file/directory_service;1"]
+                                   .getService(Components.interfaces.nsIProperties);
+            var prefFile = dirSvc.get("ProfDS", Components.interfaces.nsIFile);
+            prefFile.append("prefs.js");
+            prefSvc.savePrefFile(prefFile);
+          } catch(ex) { 
+            dump(ex); 
+          }
+        }
+
+        // We're done now.
+        this._wiz.canAdvance = true;
+        this._wiz.advance();
+
+        setTimeout(close, 5000);
+      }
+      else {
+        this._wiz.canAdvance = true;
+        var nextButton = this._wiz.getButton("next");
+        nextButton.click();
+      }
+      break;
+    case "Migration:ItemError":
+      var type = "undefined";
+      switch (parseInt(aData)) {
+      case Ci.nsIBrowserProfileMigrator.SETTINGS:
+        type = "settings";
+        break;
+      case Ci.nsIBrowserProfileMigrator.COOKIES:
+        type = "cookies";
+        break;
+      case Ci.nsIBrowserProfileMigrator.HISTORY:
+        type = "history";
+        break;
+      case Ci.nsIBrowserProfileMigrator.FORMDATA:
+        type = "form data";
+        break;
+      case Ci.nsIBrowserProfileMigrator.PASSWORDS:
+        type = "passwords";
+        break;
+      case Ci.nsIBrowserProfileMigrator.BOOKMARKS:
+        type = "bookmarks";
+        break;
+      case Ci.nsIBrowserProfileMigrator.OTHERDATA:
+        type = "misc. data";
+        break;
+      }
+      Cc["@mozilla.org/consoleservice;1"]
+        .getService(Ci.nsIConsoleService)
+        .logStringMessage("some " + type + " did not successfully migrate.");
+      break;
+    }
+  },
+
+  onDonePageShow: function ()
+  {
+    this._wiz.getButton("cancel").disabled = true;
+    this._wiz.canRewind = false;
+    this._listItems("doneItems");
+  }
+};
diff --git a/application/palemoon/components/migration/content/migration.xul b/application/palemoon/components/migration/content/migration.xul
new file mode 100644
index 000000000..1f205fba7
--- /dev/null
+++ b/application/palemoon/components/migration/content/migration.xul
@@ -0,0 +1,86 @@
+<?xml version="1.0"?>
+<!-- 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/. -->
+
+<?xml-stylesheet href="chrome://global/skin/" type="text/css"?>
+
+<!DOCTYPE dialog SYSTEM "chrome://browser/locale/migration/migration.dtd" >
+
+<wizard id="migrationWizard"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+        windowtype="Browser:MigrationWizard"
+        title="&migrationWizard.title;"
+        onload="MigrationWizard.init()"
+        onunload="MigrationWizard.uninit()"
+        style="width: 40em;"
+        buttons="accept,cancel"
+        branded="true">
+
+  <script type="application/javascript" src="chrome://browser/content/migration/migration.js"/>
+
+  <stringbundle id="brandBundle" src="chrome://branding/locale/brand.properties"/>
+
+  <wizardpage id="importSource" pageid="importSource" next="selectProfile"
+              label="&importSource.title;"
+              onpageadvanced="return MigrationWizard.onImportSourcePageAdvanced();">
+    <description id="importAll" control="importSourceGroup">&importFrom.label;</description>
+    <description id="importBookmarks" control="importSourceGroup" hidden="true">&importFromBookmarks.label;</description>
+
+    <radiogroup id="importSourceGroup" align="start">
+      <radio id="firefox"   label="&importFromFirefox.label;"   accesskey="&importFromFirefox.accesskey;"/>
+      <radio id="nothing"   label="&importFromNothing.label;"   accesskey="&importFromNothing.accesskey;" hidden="true"/>
+    </radiogroup>
+    <label id="noSources" hidden="true">&noMigrationSources.label;</label>
+  </wizardpage>
+
+  <wizardpage id="selectProfile" pageid="selectProfile" label="&selectProfile.title;"
+              next="importItems"
+              onpageshow="return MigrationWizard.onSelectProfilePageShow();"
+              onpagerewound="return MigrationWizard.onSelectProfilePageRewound();"
+              onpageadvanced="return MigrationWizard.onSelectProfilePageAdvanced();">
+    <description control="profiles">&selectProfile.label;</description>
+
+    <radiogroup id="profiles" align="left"/>
+  </wizardpage>
+
+  <wizardpage id="importItems" pageid="importItems" label="&importItems.title;"
+              next="homePageImport"
+              onpageshow="return MigrationWizard.onImportItemsPageShow();"
+              onpagerewound="return MigrationWizard.onImportItemsPageRewound();"
+              onpageadvanced="return MigrationWizard.onImportItemsPageAdvanced();"
+              oncommand="MigrationWizard.onImportItemCommand();">
+    <description control="dataSources">&importItems.label;</description>
+
+    <vbox id="dataSources" style="overflow: auto; -moz-appearance: listbox" align="left" flex="1" role="group"/>
+  </wizardpage>
+
+  <wizardpage id="homePageImport" pageid="homePageImport"
+              next="migrating"
+              onpageshow="return MigrationWizard.onHomePageMigrationPageShow();"
+              onpageadvanced="return MigrationWizard.onHomePageMigrationPageAdvanced();">
+
+    <description id="homePageImportDesc" control="homePageRadioGroup"/>
+    <radiogroup id="homePageRadiogroup">
+      <radio id="homePageSingleStart" selected="true" />
+      <radio id="oldHomePage" hidden="true" />
+    </radiogroup>
+  </wizardpage>
+
+  <wizardpage id="migrating" pageid="migrating" label="&migrating.title;"
+              next="done"
+              onpageshow="MigrationWizard.onMigratingPageShow();">
+    <description control="migratingItems">&migrating.label;</description>
+
+    <vbox id="migratingItems" style="overflow: auto;" align="left" role="group"/>
+  </wizardpage>
+
+  <wizardpage id="done" pageid="done" label="&done.title;"
+              onpageshow="MigrationWizard.onDonePageShow();">
+    <description control="doneItems">&done.label;</description>
+
+    <vbox id="doneItems" style="overflow: auto;" align="left" role="group"/>
+  </wizardpage>
+
+</wizard>
+
diff --git a/application/palemoon/components/migration/jar.mn b/application/palemoon/components/migration/jar.mn
new file mode 100644
index 000000000..ab580b2bc
--- /dev/null
+++ b/application/palemoon/components/migration/jar.mn
@@ -0,0 +1,7 @@
+# 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/.
+
+browser.jar:
+   content/browser/migration/migration.xul                    (content/migration.xul)
+   content/browser/migration/migration.js                     (content/migration.js)
diff --git a/application/palemoon/components/migration/moz.build b/application/palemoon/components/migration/moz.build
new file mode 100644
index 000000000..ba85f865f
--- /dev/null
+++ b/application/palemoon/components/migration/moz.build
@@ -0,0 +1,26 @@
+# -*- Mode: python; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# 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/.
+
+JAR_MANIFESTS += ['jar.mn']
+
+XPIDL_SOURCES += [
+    'nsIBrowserProfileMigrator.idl',
+]
+
+XPIDL_MODULE = 'migration'
+
+EXTRA_COMPONENTS += [
+    'BrowserProfileMigrators.manifest',
+    'FirefoxProfileMigrator.js',
+    'ProfileMigrator.js',
+]
+
+EXTRA_PP_JS_MODULES += [
+    'MigrationUtils.jsm',
+]
+
+FINAL_LIBRARY = 'browsercomps'
+
diff --git a/application/palemoon/components/migration/nsIBrowserProfileMigrator.idl b/application/palemoon/components/migration/nsIBrowserProfileMigrator.idl
new file mode 100644
index 000000000..ebff4628c
--- /dev/null
+++ b/application/palemoon/components/migration/nsIBrowserProfileMigrator.idl
@@ -0,0 +1,63 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/. */
+
+#include "nsISupports.idl"
+
+interface nsIArray;
+interface nsIProfileStartup;
+
+[scriptable, uuid(30e5a7ec-f71e-4f41-9dbd-7429c02132ec)]
+interface nsIBrowserProfileMigrator : nsISupports 
+{
+  /**
+   * profile items to migrate. use with migrate().
+   */
+  const unsigned short ALL         = 0x0000;
+  const unsigned short SETTINGS    = 0x0001;
+  const unsigned short COOKIES     = 0x0002;
+  const unsigned short HISTORY     = 0x0004;
+  const unsigned short FORMDATA    = 0x0008;
+  const unsigned short PASSWORDS   = 0x0010;
+  const unsigned short BOOKMARKS   = 0x0020;
+  const unsigned short OTHERDATA   = 0x0040;
+
+  /**
+   * Copy user profile information to the current active profile.
+   * @param aItems   list of data items to migrate. see above for values.
+   * @param aStartup helper interface which is non-null if called during startup. 
+   * @param aProfile profile to migrate from, if there is more than one.
+   */
+  void migrate(in unsigned short aItems, in nsIProfileStartup aStartup, in jsval aProfile);
+
+  /**
+   * A bit field containing profile items that this migrator
+   * offers for import. 
+   * @param   aProfile the profile that we are looking for available data
+   *          to import
+   * @param   aDoingStartup "true" if the profile is not currently being used.
+   * @return  bit field containing profile items (see above)
+   * @note    a return value of 0 represents no items rather than ALL.
+   */
+  unsigned short getMigrateData(in jsval aProfile, in boolean aDoingStartup);
+
+  /** 
+   * Whether or not there is any data that can be imported from this 
+   * browser (i.e. whether or not it is installed, and there exists
+   * a user profile)
+   */
+  readonly attribute boolean          sourceExists;
+
+
+  /** 
+   * An enumeration of available profiles. If the import source does 
+   * not support profiles, this attribute is null.
+   */
+  readonly attribute jsval            sourceProfiles;
+
+  /**
+   * The import source homepage.  Returns null if not present/available
+   */
+  readonly attribute AUTF8String      sourceHomePageURL;
+};