Split fwl/core class pt II.

BUILD.gn

Index: BUILD.gn
diff --git a/BUILD.gn b/BUILD.gn
index 680fad229334f1fd601dc852b23a2c0dadd200e4..aa1a6481f3c1c7c6b58548151b4fe105894a0b3e 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -1189,6 +1189,8 @@ 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",
@@ -1241,6 +1243,10 @@ 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",
@@ -1248,18 +1254,18 @@ 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",
@@ -1311,6 +1317,7 @@ 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",