Move xfa/fwl/core to xfa/fwl.

xfa/fwl/cfwl_messagemousewheel.h

Index: xfa/fwl/cfwl_messagemousewheel.h
diff --git a/xfa/fwl/core/cfwl_msgmousewheel.h b/xfa/fwl/cfwl_messagemousewheel.h
similarity index 57%
rename from xfa/fwl/core/cfwl_msgmousewheel.h
rename to xfa/fwl/cfwl_messagemousewheel.h
index 503bcdebe8f3760b59e511c2114c0f0548d88968..4d568c8e45fea59b6d61a2180cae7cc52b35fbc4 100644
--- a/xfa/fwl/core/cfwl_msgmousewheel.h
+++ b/xfa/fwl/cfwl_messagemousewheel.h
@@ -4,17 +4,17 @@
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
-#ifndef XFA_FWL_CORE_CFWL_MSGMOUSEWHEEL_H_
-#define XFA_FWL_CORE_CFWL_MSGMOUSEWHEEL_H_
+#ifndef XFA_FWL_CFWL_MESSAGEMOUSEWHEEL_H_
+#define XFA_FWL_CFWL_MESSAGEMOUSEWHEEL_H_
 
 #include <memory>
 
-#include "xfa/fwl/core/cfwl_message.h"
+#include "xfa/fwl/cfwl_message.h"
 
-class CFWL_MsgMouseWheel : public CFWL_Message {
+class CFWL_MessageMouseWheel : public CFWL_Message {
  public:
-  CFWL_MsgMouseWheel(CFWL_Widget* pSrcTarget, CFWL_Widget* pDstTarget);
-  ~CFWL_MsgMouseWheel() override;
+  CFWL_MessageMouseWheel(CFWL_Widget* pSrcTarget, CFWL_Widget* pDstTarget);
+  ~CFWL_MessageMouseWheel() override;
 
   // CFWL_Message
   std::unique_ptr<CFWL_Message> Clone() override;
@@ -26,4 +26,4 @@ class CFWL_MsgMouseWheel : public CFWL_Message {
   uint32_t m_dwFlags;
 };
 
-#endif  // XFA_FWL_CORE_CFWL_MSGMOUSEWHEEL_H_
+#endif  // XFA_FWL_CFWL_MESSAGEMOUSEWHEEL_H_