Backed out changeset 5c4677b1ea47 (bug 1820655) for causing failures at browser_open_migration_wizard.js. CLOSED TREE

browser/components/preferences/main.js

@@ -10,7 +10,6 @@
 
 ChromeUtils.defineESModuleGetters(this, {
   BackgroundUpdate: "resource://gre/modules/BackgroundUpdate.sys.mjs",
-  MigrationUtils: "resource:///modules/MigrationUtils.sys.mjs",
 });
 
 // Constants & Enumeration Values
@@ -473,11 +472,6 @@ var gMainPane = {
       "command",
       gMainPane.showContainerSettings
     );
-    setEventListener(
-      "data-migration",
-      "command",
-      gMainPane.onMigrationButtonCommand
-    );
 
     // For media control toggle button, we support it on Windows 8.1+ (NT6.3),
     // MacOs 10.4+ (darwin8.0, but we already don't support that) and
@@ -1719,20 +1713,6 @@ var gMainPane = {
     })().catch(console.error);
   },
 
-  onMigrationButtonCommand(command) {
-    // When browser.migrate.content-modal.enabled is enabled by default,
-    // the event handler can just call showMigrationWizardDialog directly,
-    // but for now, we delegate to MigrationUtils to open the native modal
-    // in case that's the dialog we're still using.
-    //
-    // Enabling the pref by default will be part of bug 1822156.
-    const browser = window.docShell.chromeEventHandler;
-    const browserWindow = browser.ownerGlobal;
-    MigrationUtils.showMigrationWizard(browserWindow, {
-      entrypoint: MigrationUtils.MIGRATION_ENTRYPOINTS.PREFERENCES,
-    });
-  },
-
   /**
    * Displays the migration wizard dialog in an HTML dialog.
    */