Interrogate PpdProvider from PrintPreview.

chrome/browser/chromeos/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//extensions/features/features.gni")
 import("//media/media_options.gni")
 import("//printing/features/features.gni")
 import("//third_party/protobuf/proto_library.gni")
@@ skipping 1133 matching lines @@
     "printing/cups_print_job_manager.cc",
     "printing/cups_print_job_manager.h",
     "printing/cups_print_job_manager_factory.cc",
     "printing/cups_print_job_manager_factory.h",
     "printing/cups_print_job_notification.cc",
     "printing/cups_print_job_notification.h",
     "printing/cups_print_job_notification_manager.cc",
     "printing/cups_print_job_notification_manager.h",
     "printing/fake_cups_print_job_manager.cc",
     "printing/fake_cups_print_job_manager.h",
+    "printing/ppd_provider_factory.cc",
+    "printing/ppd_provider_factory.h",
     "printing/printer_pref_manager.cc",
     "printing/printer_pref_manager.h",
     "printing/printer_pref_manager_factory.cc",
     "printing/printer_pref_manager_factory.h",
     "profiles/avatar_menu_actions_chromeos.cc",
     "profiles/avatar_menu_actions_chromeos.h",
     "profiles/avatar_menu_chromeos.cc",
     "profiles/multiprofiles_intro_dialog.cc",
     "profiles/multiprofiles_intro_dialog.h",
     "profiles/multiprofiles_session_aborted_dialog.cc",
@@ skipping 508 matching lines @@
     "policy/proto/chrome_device_policy.proto",
     "policy/proto/install_attributes.proto",
   ]
 }
 
 proto_library("attestation_proto") {
   sources = [
     "attestation/attestation_key_payload.proto",
   ]
 }