Remove unused CPWL_Wnd::IsNotifying().

In turn, remove unused m_bNotifying. This is a different member than
CFFL_InteractiveFormFiller::m_bNotifying, which is used.

Change-Id: I7e2dada58bc2b7b34aa4207966f57b76bc808ed2
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/85113
Auto-Submit: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
diff --git a/fpdfsdk/pwl/cpwl_wnd.h b/fpdfsdk/pwl/cpwl_wnd.h
index 99d1834..e8f1cbf 100644
--- a/fpdfsdk/pwl/cpwl_wnd.h
+++ b/fpdfsdk/pwl/cpwl_wnd.h
@@ -262,7 +262,6 @@
   virtual void OnCreated();
   virtual void OnDestroy();
 
-  bool IsNotifying() const { return m_bNotifying; }
   bool IsValid() const { return m_bCreated; }
   CreateParams* GetCreationParams() { return &m_CreationParams; }
   CFX_Timer::HandlerIface* GetTimerHandler() const {
@@ -303,7 +302,6 @@
   CFX_FloatRect m_rcClip;
   bool m_bCreated = false;
   bool m_bVisible = false;
-  bool m_bNotifying = false;
 };
 
 #endif  // FPDFSDK_PWL_CPWL_WND_H_