Cleanup FWL Event and Message code.

xfa/fwl/core/cfwl_event.cpp

Index: xfa/fwl/core/cfwl_event.cpp
diff --git a/xfa/fwl/core/cfwl_event.cpp b/xfa/fwl/core/cfwl_event.cpp
index 06b734531fab7c18d6a2f17f92ece2c3165e3aea..ac0682610a848198edded958f585b45f35da1605 100644
--- a/xfa/fwl/core/cfwl_event.cpp
+++ b/xfa/fwl/core/cfwl_event.cpp
@@ -6,10 +6,7 @@
 
 #include "xfa/fwl/core/cfwl_event.h"
 
-CFWL_Event::CFWL_Event() : m_pSrcTarget(nullptr), m_pDstTarget(nullptr) {}
+CFWL_Event::CFWL_Event(CFWL_EventType type)
+    : m_pSrcTarget(nullptr), m_pDstTarget(nullptr), m_type(type) {}
 
 CFWL_Event::~CFWL_Event() {}
-
-CFWL_EventType CFWL_Event::GetClassID() const {
-  return CFWL_EventType::None;
-}