Cleanup FDE interfaces.

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 879 matching lines @@
     ]
     configs -= [ "//build/config/compiler:chromium_code" ]
     configs += [
       ":pdfium_config",
       "//build/config/compiler:no_chromium_code",
     ]
   }
 
   static_library("xfa") {
     sources = [
+      "xfa/fde/cfde_path.cpp",
+      "xfa/fde/cfde_path.h",
       "xfa/fde/css/fde_css.h",
       "xfa/fde/css/fde_csscache.cpp",
       "xfa/fde/css/fde_csscache.h",
       "xfa/fde/css/fde_cssdatatable.cpp",
       "xfa/fde/css/fde_cssdatatable.h",
       "xfa/fde/css/fde_cssdeclaration.cpp",
       "xfa/fde/css/fde_cssdeclaration.h",
       "xfa/fde/css/fde_cssstyleselector.cpp",
       "xfa/fde/css/fde_cssstyleselector.h",
       "xfa/fde/css/fde_cssstylesheet.cpp",
       "xfa/fde/css/fde_cssstylesheet.h",
       "xfa/fde/css/fde_csssyntax.cpp",
       "xfa/fde/css/fde_csssyntax.h",
       "xfa/fde/fde_gedevice.cpp",
-      "xfa/fde/fde_gedevice.h",
-      "xfa/fde/fde_geobject.cpp",
       "xfa/fde/fde_geobject.h",
       "xfa/fde/fde_iterator.cpp",
       "xfa/fde/fde_iterator.h",
       "xfa/fde/fde_object.h",
-      "xfa/fde/fde_path.h",
       "xfa/fde/fde_render.cpp",
       "xfa/fde/fde_render.h",
-      "xfa/fde/fde_renderdevice.h",
       "xfa/fde/tto/fde_textout.cpp",
       "xfa/fde/tto/fde_textout.h",
       "xfa/fde/xml/fde_xml.h",
       "xfa/fde/xml/fde_xml_imp.cpp",
       "xfa/fde/xml/fde_xml_imp.h",
       "xfa/fee/fde_txtedtbuf.cpp",
       "xfa/fee/fde_txtedtbuf.h",
       "xfa/fee/fde_txtedtengine.cpp",
       "xfa/fee/fde_txtedtengine.h",
       "xfa/fee/fde_txtedtpage.cpp",
@@ skipping 783 matching lines @@
 }
 
 if (pdf_is_standalone) {
   source_set("samples") {
     testonly = true
     deps = [
       "//samples",
     ]
   }
 }