Remove unused sysbtn code

xfa/fwl/fwl_widgetdef.h

Index: xfa/fwl/fwl_widgetdef.h
diff --git a/xfa/fwl/fwl_widgetdef.h b/xfa/fwl/fwl_widgetdef.h
index a11c211abdc93884e816bdca353f93b15108124f..fd90fd3bab6f8ef1baed4f01e2d9fccfac7f8449 100644
--- a/xfa/fwl/fwl_widgetdef.h
+++ b/xfa/fwl/fwl_widgetdef.h
@@ -7,13 +7,10 @@
 #ifndef XFA_FWL_FWL_WIDGETDEF_H_
 #define XFA_FWL_FWL_WIDGETDEF_H_
 
-#define FWL_WGTSTYLE_OverLapper (0L << 0)
+#define FWL_WGTSTYLE_OverLapper 0

[Tom Sepez, 2016/12/14 17:29:27]

Again, we've got a 2-bit field starting at 0.  How to communicate that in code? 
There ought to be a mask constant here that's part of how this is used ....

[dsinclair, 2016/12/14 17:48:13]

This file is cleaned up over several CLs. I'll shuffle this around at the end
...

 #define FWL_WGTSTYLE_Popup (1L << 0)
 #define FWL_WGTSTYLE_Child (2L << 0)
 #define FWL_WGTSTYLE_Border (1L << 2)
-#define FWL_WGTSTYLE_MinimizeBox (1L << 6)
-#define FWL_WGTSTYLE_MaximizeBox (1L << 7)
-#define FWL_WGTSTYLE_CloseBox (1L << 8)
 #define FWL_WGTSTYLE_HScroll (1L << 9)
 #define FWL_WGTSTYLE_VScroll (1L << 11)
 #define FWL_WGTSTYLE_LeftScrollbar (1L << 12)