Remove Nearby printer UI from settings.

chrome/browser/resources/settings/printing_page/cups_add_printer_dialog.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @fileoverview 'settings-cups-add-printer-dialog' includes multiple dialogs to
  * set up a new CUPS printer.
  * Subdialogs include:
  * - 'add-printer-discovery-dialog' is a dialog showing discovered printers on
  *   the network that are available for setup.
@@ skipping 345 matching lines @@
   },
 
   /** @override */
   ready: function() {
     this.addWebUIListener('on-add-cups-printer', this.onAddPrinter_.bind(this));
   },
 
   /** Opens the Add printer discovery dialog. */
   open: function() {
     this.resetData_();
-    this.switchDialog_('', AddPrinterDialogs.DISCOVERY, 'showDiscoveryDialog_');
+    this.switchDialog_(
+        '', AddPrinterDialogs.MANUALLY, 'showManuallyAddDialog_');
   },
 
   /**
    * Reset all the printer data in the Add printer flow.
    * @private
    */
   resetData_: function() {
     if (this.selectedPrinter)
       this.selectedPrinter = this.getEmptyPrinter_();
     if (this.newPrinter)
@@ skipping 51 matching lines @@
   },
 
   /** @private */
   openManufacturerModelDialog_: function() {
     this.switchDialog_(this.currentDialog_, AddPrinterDialogs.MANUFACTURER,
                        'showManufacturerDialog_');
   },
 
   /** @private */
   configuringDialogClosed_: function() {
-    if (this.previousDialog_ == AddPrinterDialogs.DISCOVERY) {
-      this.switchDialog_(
-          this.currentDialog_, this.previousDialog_, 'showDiscoveryDialog_');
-    } else if (this.previousDialog_ == AddPrinterDialogs.MANUALLY) {
+    if (this.previousDialog_ == AddPrinterDialogs.MANUALLY) {
       this.switchDialog_(
           this.currentDialog_, this.previousDialog_, 'showManuallyAddDialog_');
     } else if (this.previousDialog_ == AddPrinterDialogs.MANUFACTURER) {
       this.switchDialog_(
           this.currentDialog_, this.previousDialog_, 'showManufacturerDialog_');
     }
   },
 
   /**
    * Switch dialog from |fromDialog| to |toDialog|.
@@ skipping 41 matching lines @@
       return;
 
     if (this.previousDialog_ == AddPrinterDialogs.MANUFACTURER) {
       this.setupFailed = true;
     } else if (this.previousDialog_ == AddPrinterDialogs.MANUALLY) {
       this.switchDialog_(this.currentDialog_, AddPrinterDialogs.MANUFACTURER,
                          'showManufacturerDialog_');
     }
   },
 });