Convert FWL_ERR into an enum class.

xfa/fwl/core/cfwl_message.h

 // Copyright 2016 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef XFA_FWL_CORE_CFWL_MESSAGE_H_
 #define XFA_FWL_CORE_CFWL_MESSAGE_H_
 
 #include "core/fxcrt/include/fx_string.h"
@@ skipping 43 matching lines @@
 class CFWL_Message {
  public:
   CFWL_Message()
       : m_pSrcTarget(nullptr),
         m_pDstTarget(nullptr),
         m_dwExtend(0),
         m_dwRefCount(1) {}
   virtual ~CFWL_Message() {}
 
   virtual CFWL_Message* Clone() { return nullptr; }
-  virtual FWL_ERR GetClassName(CFX_WideString& wsClass) const {
-    return FWL_ERR_Succeeded;
+  virtual FWL_Error GetClassName(CFX_WideString& wsClass) const {
+    return FWL_Error::Succeeded;
   }
   virtual CFWL_MessageType GetClassID() const { return CFWL_MessageType::None; }
 
   uint32_t Release() {
     m_dwRefCount--;
     uint32_t dwRefCount = m_dwRefCount;
     if (!m_dwRefCount)
       delete this;
     return dwRefCount;
   }
 
   CFWL_Message* Retain() {
     m_dwRefCount++;
     return this;
   }
 
   IFWL_Widget* m_pSrcTarget;
   IFWL_Widget* m_pDstTarget;
   uint32_t m_dwExtend;
 
  private:
   uint32_t m_dwRefCount;
 };
 
-#define BEGIN_FWL_MESSAGE_DEF(classname, msgType)                   \
-  class classname : public CFWL_Message {                           \
-   public:                                                          \
-    classname() : CFWL_Message() {}                                 \
-    CFWL_Message* Clone() override { return new classname(*this); } \
-    FWL_ERR GetClassName(CFX_WideString& wsClass) const override {  \
-      wsClass = L## #classname;                                     \
-      return FWL_ERR_Succeeded;                                     \
-    }                                                               \
+#define BEGIN_FWL_MESSAGE_DEF(classname, msgType)                    \
+  class classname : public CFWL_Message {                            \
+   public:                                                           \
+    classname() : CFWL_Message() {}                                  \
+    CFWL_Message* Clone() override { return new classname(*this); }  \
+    FWL_Error GetClassName(CFX_WideString& wsClass) const override { \
+      wsClass = L## #classname;                                      \
+      return FWL_Error::Succeeded;                                   \
+    }                                                                \
     CFWL_MessageType GetClassID() const override { return msgType; }
 
 #define END_FWL_MESSAGE_DEF \
   }                         \
   ;  // NOLINT
 
 BEGIN_FWL_MESSAGE_DEF(CFWL_MsgActivate, CFWL_MessageType::Activate)
 END_FWL_MESSAGE_DEF
 
 BEGIN_FWL_MESSAGE_DEF(CFWL_MsgDeactivate, CFWL_MessageType::Deactivate)
@@ skipping 59 matching lines @@
 FX_FLOAT m_fy;
 END_FWL_MESSAGE_DEF
 
 BEGIN_FWL_MESSAGE_DEF(CFWL_MsgClose, CFWL_MessageType::Close)
 END_FWL_MESSAGE_DEF
 
 BEGIN_FWL_MESSAGE_DEF(CFWL_MsgWindowWillMove, CFWL_MessageType::WindowWillMove)
 END_FWL_MESSAGE_DEF
 
 #endif  // XFA_FWL_CORE_CFWL_MESSAGE_H_