Split fwl/core class pt II.

BUILD.gn

Index: BUILD.gn
diff --git a/BUILD.gn b/BUILD.gn
index 11174aeb64d4ebad1b0492b7b60c6648e531ece2..3542d457d9d63e71b8180aa918b402ff1d7f958b 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -1190,6 +1190,8 @@ if (pdf_enable_xfa) {
       "xfa/fwl/core/cfwl_edit.h",
       "xfa/fwl/core/cfwl_event.cpp",
       "xfa/fwl/core/cfwl_event.h",
+      "xfa/fwl/core/cfwl_eventtarget.cpp",
+      "xfa/fwl/core/cfwl_eventtarget.h",
       "xfa/fwl/core/cfwl_evtcheckstatechanged.cpp",
       "xfa/fwl/core/cfwl_evtcheckstatechanged.h",
       "xfa/fwl/core/cfwl_evtcheckword.cpp",
@@ -1242,6 +1244,10 @@ if (pdf_enable_xfa) {
       "xfa/fwl/core/cfwl_msgmousewheel.h",
       "xfa/fwl/core/cfwl_msgsetfocus.cpp",
       "xfa/fwl/core/cfwl_msgsetfocus.h",
+      "xfa/fwl/core/cfwl_notedriver.cpp",
+      "xfa/fwl/core/cfwl_notedriver.h",
+      "xfa/fwl/core/cfwl_noteloop.cpp",
+      "xfa/fwl/core/cfwl_noteloop.h",
       "xfa/fwl/core/cfwl_picturebox.cpp",
       "xfa/fwl/core/cfwl_picturebox.h",
       "xfa/fwl/core/cfwl_pushbutton.cpp",
@@ -1249,18 +1255,18 @@ if (pdf_enable_xfa) {
       "xfa/fwl/core/cfwl_sysbtn.cpp",
       "xfa/fwl/core/cfwl_sysbtn.h",
       "xfa/fwl/core/cfwl_themebackground.h",
+      "xfa/fwl/core/cfwl_themepart.cpp",
       "xfa/fwl/core/cfwl_themepart.h",
       "xfa/fwl/core/cfwl_themetext.h",
       "xfa/fwl/core/cfwl_widget.cpp",
       "xfa/fwl/core/cfwl_widget.h",
       "xfa/fwl/core/cfwl_widgetmgr.cpp",
       "xfa/fwl/core/cfwl_widgetmgr.h",
+      "xfa/fwl/core/cfwl_widgetproperties.cpp",
       "xfa/fwl/core/cfwl_widgetproperties.h",
       "xfa/fwl/core/cfx_barcode.cpp",
       "xfa/fwl/core/cfx_barcode.h",
       "xfa/fwl/core/fwl_error.h",
-      "xfa/fwl/core/fwl_noteimp.cpp",
-      "xfa/fwl/core/fwl_noteimp.h",
       "xfa/fwl/core/fwl_widgetdef.h",
       "xfa/fwl/core/fwl_widgethit.h",
       "xfa/fwl/core/ifwl_adaptertimermgr.h",
@@ -1312,6 +1318,7 @@ if (pdf_enable_xfa) {
       "xfa/fwl/core/ifwl_widget.cpp",
       "xfa/fwl/core/ifwl_widget.h",
       "xfa/fwl/core/ifwl_widgetdelegate.h",
+      "xfa/fwl/core/ifwl_widgetmgrdelegate.h",
       "xfa/fwl/theme/cfwl_arrowdata.cpp",
       "xfa/fwl/theme/cfwl_arrowdata.h",
       "xfa/fwl/theme/cfwl_barcodetp.cpp",