1 files changed, 0 insertions, 106 deletions
diff --git a/application/basilisk/components/sessionstore/SessionMigration.jsm b/application/basilisk/components/sessionstore/SessionMigration.jsm
deleted file mode 100644
index e9bd5f055..000000000
--- a/application/basilisk/components/sessionstore/SessionMigration.jsm
+++ /dev/null
@@ -1,106 +0,0 @@
-/* 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/. */
-
-"use strict";
-
-this.EXPORTED_SYMBOLS = ["SessionMigration"];
-
-const Cu = Components.utils;
-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();
-});
-
-// A decoder.
-XPCOMUtils.defineLazyGetter(this, "gDecoder", function () {
-  return new TextDecoder();
-});
-
-var SessionMigrationInternal = {
-  /**
-   * Convert the original session restore state into a minimal state. It will
-   * only contain:
-   * - open windows
-   *   - with tabs
-   *     - with history entries with only title, url, triggeringPrincipal
-   *     - with pinned state
-   *     - with tab group info (hidden + group id)
-   *     - with selected tab info
-   *   - with selected window info
-   *
-   * The complete state is then wrapped into the "about:welcomeback" page as
-   * form field info to be restored when restoring the state.
-   */
-  convertState: function(aStateObj) {
-    let state = {
-      selectedWindow: aStateObj.selectedWindow,
-      _closedWindows: []
-    };
-    state.windows = aStateObj.windows.map(function(oldWin) {
-      var win = {extData: {}};
-      win.tabs = oldWin.tabs.map(function(oldTab) {
-        var tab = {};
-        // Keep only titles, urls and triggeringPrincipals for history entries
-        tab.entries = oldTab.entries.map(function(entry) {
-          return { url: entry.url,
-                   triggeringPrincipal_base64: entry.triggeringPrincipal_base64,
-                   title: entry.title };
-        });
-        tab.index = oldTab.index;
-        tab.hidden = oldTab.hidden;
-        tab.pinned = oldTab.pinned;
-        return tab;
-      });
-      win.selected = oldWin.selected;
-      win._closedTabs = [];
-      return win;
-    });
-    let url = "about:welcomeback";
-    let formdata = {id: {sessionData: state}, url};
-    let entry = { url, triggeringPrincipal_base64: Utils.SERIALIZED_SYSTEMPRINCIPAL };
-    return { windows: [{ tabs: [{ entries: [ entry ], formdata}]}]};
-  },
-  /**
-   * Asynchronously read session restore state (JSON) from a path
-   */
-  readState: function(aPath) {
-    return Task.spawn(function*() {
-      let bytes = yield OS.File.read(aPath);
-      let text = gDecoder.decode(bytes);
-      let state = JSON.parse(text);
-      return state;
-    });
-  },
-  /**
-   * Asynchronously write session restore state as JSON to a path
-   */
-  writeState: function(aPath, aState) {
-    let bytes = gEncoder.encode(JSON.stringify(aState));
-    return OS.File.writeAtomic(aPath, bytes, {tmpPath: aPath + ".tmp"});
-  }
-}
-
-var SessionMigration = {
-  /**
-   * Migrate a limited set of session data from one path to another.
-   */
-  migrate: function(aFromPath, aToPath) {
-    return Task.spawn(function*() {
-      let inState = yield SessionMigrationInternal.readState(aFromPath);
-      let outState = SessionMigrationInternal.convertState(inState);
-      // Unfortunately, we can't use SessionStore's own SessionFile to
-      // write out the data because it has a dependency on the profile dir
-      // being known. When the migration runs, there is no guarantee that
-      // that's true.
-      yield SessionMigrationInternal.writeState(aToPath, outState);
-    });
-  }
-};