Remove IFX_Barcode.

BUILD.gn

 # 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.
 
 import("//build_overrides/v8.gni")
 import("//testing/test.gni")
 import("pdfium.gni")
 
 config("pdfium_config") {
   cflags = []
@@ skipping 1013 matching lines @@
       "xfa/fwl/basewidget/ifwl_combobox.h",
       "xfa/fwl/basewidget/ifwl_datetimepicker.h",
       "xfa/fwl/basewidget/ifwl_edit.h",
       "xfa/fwl/basewidget/ifwl_listbox.h",
       "xfa/fwl/basewidget/ifwl_monthcalendar.h",
       "xfa/fwl/basewidget/ifwl_picturebox.h",
       "xfa/fwl/basewidget/ifwl_pushbutton.h",
       "xfa/fwl/basewidget/ifwl_scrollbar.h",
       "xfa/fwl/basewidget/ifwl_spinbutton.h",
       "xfa/fwl/basewidget/ifwl_tooltip.h",
-      "xfa/fwl/basewidget/ifx_barcode.h",
       "xfa/fwl/core/cfwl_event.h",
       "xfa/fwl/core/cfwl_message.h",
       "xfa/fwl/core/cfwl_note.h",
       "xfa/fwl/core/cfwl_themebackground.h",
       "xfa/fwl/core/cfwl_themepart.h",
       "xfa/fwl/core/cfwl_themetext.h",
       "xfa/fwl/core/cfwl_widgetimpproperties.h",
       "xfa/fwl/core/fwl_appimp.cpp",
       "xfa/fwl/core/fwl_appimp.h",
       "xfa/fwl/core/fwl_contentimp.cpp",
@@ skipping 686 matching lines @@
       "//v8:v8_libplatform",
     ]
     include_dirs += [
       "//v8",
       "//v8/include",
     ]
     configs += [ "//v8:external_startup_data" ]
   }
   configs += [ ":pdfium_config" ]
 }