Move fgas_sax into individual files in fde.

xfa.gyp

 {
   "variables": {
     "pdf_enable_v8%": 1,
   },
   "target_defaults": {
     "defines": [
       "PDF_ENABLE_XFA",
     ],
     'msvs_disabled_warnings': [
       4005, 4018, 4146, 4333, 4345, 4267,
@@ skipping 70 matching lines @@
         "xfa/fde/fde_iterator.h",
         "xfa/fde/fde_object.h",
         "xfa/fde/fde_render.cpp",
         "xfa/fde/fde_render.h",
         "xfa/fde/ifde_txtedtdorecord.h",
         "xfa/fde/ifde_txtedtengine.h",
         "xfa/fde/ifde_txtedtpage.h",
         "xfa/fde/ifx_chariter.h",
         "xfa/fde/tto/fde_textout.cpp",
         "xfa/fde/tto/fde_textout.h",
+        "xfa/fde/xml/cfx_saxreader.cpp",
+        "xfa/fde/xml/cfx_saxreader.h",
         "xfa/fde/xml/fde_xml.h",
         "xfa/fde/xml/fde_xml_imp.cpp",
         "xfa/fde/xml/fde_xml_imp.h",
         "xfa/fgas/crt/fgas_algorithm.cpp",
         "xfa/fgas/crt/fgas_algorithm.h",
         "xfa/fgas/crt/fgas_codepage.cpp",
         "xfa/fgas/crt/fgas_codepage.h",
         "xfa/fgas/crt/fgas_encode.cpp",
         "xfa/fgas/crt/fgas_language.h",
         "xfa/fgas/crt/fgas_memory.cpp",
@@ skipping 17 matching lines @@
         "xfa/fgas/layout/fgas_rtfbreak.h",
         "xfa/fgas/layout/fgas_textbreak.cpp",
         "xfa/fgas/layout/fgas_textbreak.h",
         "xfa/fgas/layout/fgas_unicode.cpp",
         "xfa/fgas/layout/fgas_unicode.h",
         "xfa/fgas/localization/fgas_datetime.cpp",
         "xfa/fgas/localization/fgas_datetime.h",
         "xfa/fgas/localization/fgas_locale.cpp",
         "xfa/fgas/localization/fgas_locale.h",
         "xfa/fgas/localization/fgas_localeimp.h",
-        "xfa/fgas/xml/fgas_sax.cpp",
-        "xfa/fgas/xml/fgas_sax.h",
         "xfa/fwl/basewidget/fwl_barcodeimp.cpp",
         "xfa/fwl/basewidget/fwl_barcodeimp.h",
         "xfa/fwl/basewidget/fwl_caretimp.cpp",
         "xfa/fwl/basewidget/fwl_caretimp.h",
         "xfa/fwl/basewidget/fwl_checkboximp.cpp",
         "xfa/fwl/basewidget/fwl_checkboximp.h",
         "xfa/fwl/basewidget/fwl_comboboximp.cpp",
         "xfa/fwl/basewidget/fwl_comboboximp.h",
         "xfa/fwl/basewidget/fwl_datetimepickerimp.cpp",
         "xfa/fwl/basewidget/fwl_datetimepickerimp.h",
@@ skipping 611 matching lines @@
           "sources": [],
         }],
         ["OS == 'mac'", {
           "configurations": {},
           "sources": [],
         }],
       ]
     }
   ]
 }