Remove the cups_print_job_manager_impl header

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 1559 matching lines @@
       "events/xinput_hierarchy_changed_event_listener.cc",
       "events/xinput_hierarchy_changed_event_listener.h",
       "system/input_device_settings_impl_x11.cc",
       "system_logs/touch_log_source_x11.cc",
     ]
   }
 
   if (use_cups) {
     sources += [
       "printing/cups_print_job_manager_impl.cc",
-      "printing/cups_print_job_manager_impl.h",
       "printing/printer_info_cups.cc",
     ]
   } else {
     sources += [
       "printing/fake_cups_print_job_manager.cc",
       "printing/fake_cups_print_job_manager.h",
       "printing/printer_info_stub.cc",
     ]
   }
 
@@ skipping 384 matching lines @@
     "policy/proto/chrome_device_policy.proto",
     "policy/proto/install_attributes.proto",
   ]
 }
 
 proto_library("attestation_proto") {
   sources = [
     "attestation/attestation_key_payload.proto",
   ]
 }