Remove unused code.

xfa.gyp

 {
   "variables": {
     "chromium_code": 1,
     "pdf_enable_v8%": 1,
   },
   "target_defaults": {
     "defines": [
       "PDF_ENABLE_XFA",
     ],
     'msvs_disabled_warnings': [
@@ skipping 200 matching lines @@
         "xfa/fwl/lightwidget/cfwl_datetimepicker.cpp",
         "xfa/fwl/lightwidget/cfwl_datetimepicker.h",
         "xfa/fwl/lightwidget/cfwl_edit.cpp",
         "xfa/fwl/lightwidget/cfwl_edit.h",
         "xfa/fwl/lightwidget/cfwl_listbox.cpp",
         "xfa/fwl/lightwidget/cfwl_listbox.h",
         "xfa/fwl/lightwidget/cfwl_picturebox.cpp",
         "xfa/fwl/lightwidget/cfwl_picturebox.h",
         "xfa/fwl/lightwidget/cfwl_pushbutton.cpp",
         "xfa/fwl/lightwidget/cfwl_pushbutton.h",
-        "xfa/fwl/lightwidget/cfwl_scrollbar.cpp",
-        "xfa/fwl/lightwidget/cfwl_scrollbar.h",
-        "xfa/fwl/lightwidget/cfwl_theme.cpp",
-        "xfa/fwl/lightwidget/cfwl_theme.h",
-        "xfa/fwl/lightwidget/cfwl_tooltip.cpp",
-        "xfa/fwl/lightwidget/cfwl_tooltip.h",
         "xfa/fwl/lightwidget/cfwl_widget.cpp",
         "xfa/fwl/lightwidget/cfwl_widget.h",
-        "xfa/fwl/lightwidget/cfwl_widgetdelegate.cpp",
-        "xfa/fwl/lightwidget/cfwl_widgetdelegate.h",
         "xfa/fwl/lightwidget/cfwl_widgetproperties.cpp",
         "xfa/fwl/lightwidget/cfwl_widgetproperties.h",
         "xfa/fwl/theme/cfwl_barcodetp.cpp",
         "xfa/fwl/theme/cfwl_barcodetp.h",
         "xfa/fwl/theme/cfwl_carettp.cpp",
         "xfa/fwl/theme/cfwl_carettp.h",
         "xfa/fwl/theme/cfwl_checkboxtp.cpp",
         "xfa/fwl/theme/cfwl_checkboxtp.h",
         "xfa/fwl/theme/cfwl_comboboxtp.cpp",
         "xfa/fwl/theme/cfwl_comboboxtp.h",
         "xfa/fwl/theme/cfwl_datetimepickedtp.cpp",
         "xfa/fwl/theme/cfwl_datetimepickertp.h",
         "xfa/fwl/theme/cfwl_edittp.cpp",
         "xfa/fwl/theme/cfwl_edittp.h",
-        "xfa/fwl/theme/cfwl_formtp.cpp",
-        "xfa/fwl/theme/cfwl_formtp.h",
         "xfa/fwl/theme/cfwl_listboxtp.cpp",
         "xfa/fwl/theme/cfwl_listboxtp.h",
         "xfa/fwl/theme/cfwl_monthcalendartp.cpp",
         "xfa/fwl/theme/cfwl_monthcalendartp.h",
         "xfa/fwl/theme/cfwl_pictureboxtp.cpp",
         "xfa/fwl/theme/cfwl_pictureboxtp.h",
         "xfa/fwl/theme/cfwl_pushbuttontp.cpp",
         "xfa/fwl/theme/cfwl_pushbuttontp.h",
         "xfa/fwl/theme/cfwl_scrollbartp.cpp",
         "xfa/fwl/theme/cfwl_scrollbartp.h",
         "xfa/fwl/theme/cfwl_utils.h",
         "xfa/fwl/theme/cfwl_widgettp.cpp",
         "xfa/fwl/theme/cfwl_widgettp.h",
         "xfa/fxbarcode/BC_Dimension.cpp",
         "xfa/fxbarcode/BC_Dimension.h",
         "xfa/fxbarcode/BC_Library.cpp",
-        "xfa/fxbarcode/BC_ResultPoint.cpp",
-        "xfa/fxbarcode/BC_ResultPoint.h",
         "xfa/fxbarcode/BC_TwoDimWriter.cpp",
         "xfa/fxbarcode/BC_TwoDimWriter.h",
         "xfa/fxbarcode/BC_UtilCodingConvert.cpp",
         "xfa/fxbarcode/BC_UtilCodingConvert.h",
         "xfa/fxbarcode/BC_Utils.cpp",
         "xfa/fxbarcode/BC_Writer.cpp",
         "xfa/fxbarcode/BC_Writer.h",
         "xfa/fxbarcode/cbc_codabar.cpp",
         "xfa/fxbarcode/cbc_codabar.h",
         "xfa/fxbarcode/cbc_code128.cpp",
@@ skipping 13 matching lines @@
         "xfa/fxbarcode/cbc_pdf417i.cpp",
         "xfa/fxbarcode/cbc_pdf417i.h",
         "xfa/fxbarcode/cbc_qrcode.cpp",
         "xfa/fxbarcode/cbc_qrcode.h",
         "xfa/fxbarcode/cbc_upca.cpp",
         "xfa/fxbarcode/cbc_upca.h",
         "xfa/fxbarcode/common/BC_CommonBitArray.cpp",
         "xfa/fxbarcode/common/BC_CommonBitArray.h",
         "xfa/fxbarcode/common/BC_CommonBitMatrix.cpp",
         "xfa/fxbarcode/common/BC_CommonBitMatrix.h",
-        "xfa/fxbarcode/common/BC_CommonBitSource.cpp",
-        "xfa/fxbarcode/common/BC_CommonBitSource.h",
         "xfa/fxbarcode/common/BC_CommonByteArray.cpp",
         "xfa/fxbarcode/common/BC_CommonByteArray.h",
         "xfa/fxbarcode/common/BC_CommonByteMatrix.cpp",
         "xfa/fxbarcode/common/BC_CommonByteMatrix.h",
-        "xfa/fxbarcode/common/BC_CommonPerspectiveTransform.cpp",
-        "xfa/fxbarcode/common/BC_CommonPerspectiveTransform.h",
         "xfa/fxbarcode/common/reedsolomon/BC_ReedSolomon.cpp",
         "xfa/fxbarcode/common/reedsolomon/BC_ReedSolomon.h",
         "xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.cpp",
         "xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h",
         "xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp",
         "xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h",
         "xfa/fxbarcode/datamatrix/BC_ASCIIEncoder.cpp",
         "xfa/fxbarcode/datamatrix/BC_ASCIIEncoder.h",
         "xfa/fxbarcode/datamatrix/BC_Base256Encoder.cpp",
         "xfa/fxbarcode/datamatrix/BC_Base256Encoder.h",
@@ skipping 37 matching lines @@
         "xfa/fxbarcode/oned/BC_OnedEAN8Writer.cpp",
         "xfa/fxbarcode/oned/BC_OnedEAN8Writer.h",
         "xfa/fxbarcode/oned/BC_OnedUPCAWriter.cpp",
         "xfa/fxbarcode/oned/BC_OnedUPCAWriter.h",
         "xfa/fxbarcode/pdf417/BC_PDF417.cpp",
         "xfa/fxbarcode/pdf417/BC_PDF417.h",
         "xfa/fxbarcode/pdf417/BC_PDF417BarcodeMatrix.cpp",
         "xfa/fxbarcode/pdf417/BC_PDF417BarcodeMatrix.h",
         "xfa/fxbarcode/pdf417/BC_PDF417BarcodeRow.cpp",
         "xfa/fxbarcode/pdf417/BC_PDF417BarcodeRow.h",
-        "xfa/fxbarcode/pdf417/BC_PDF417Codeword.cpp",
-        "xfa/fxbarcode/pdf417/BC_PDF417Codeword.h",
         "xfa/fxbarcode/pdf417/BC_PDF417Compaction.cpp",
         "xfa/fxbarcode/pdf417/BC_PDF417Compaction.h",
         "xfa/fxbarcode/pdf417/BC_PDF417ErrorCorrection.cpp",
         "xfa/fxbarcode/pdf417/BC_PDF417ErrorCorrection.h",
         "xfa/fxbarcode/pdf417/BC_PDF417HighLevelEncoder.cpp",
         "xfa/fxbarcode/pdf417/BC_PDF417HighLevelEncoder.h",
         "xfa/fxbarcode/pdf417/BC_PDF417Writer.cpp",
         "xfa/fxbarcode/pdf417/BC_PDF417Writer.h",
         "xfa/fxbarcode/qrcode/BC_QRCodeWriter.cpp",
         "xfa/fxbarcode/qrcode/BC_QRCodeWriter.h",
@@ skipping 246 matching lines @@
           "sources": [],
         }],
         ["OS == 'mac'", {
           "configurations": {},
           "sources": [],
         }],
       ]
     }
   ]
 }