Remove CLASSHASH defines in favour of an enum class.

xfa/fwl/core/fwl_formimp.cpp

 // Copyright 2014 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
 
 #include "xfa/fwl/core/fwl_formimp.h"
 
 #include "xfa/fde/tto/fde_textout.h"
 #include "xfa/fwl/basewidget/fwl_formproxyimp.h"
@@ skipping 83 matching lines @@
 CFWL_FormImp::~CFWL_FormImp() {
   RemoveSysButtons();
   delete m_pNoteLoop;
 }
 
 FWL_ERR CFWL_FormImp::GetClassName(CFX_WideString& wsClass) const {
   wsClass = FWL_CLASS_Form;
   return FWL_ERR_Succeeded;
 }
 
-uint32_t CFWL_FormImp::GetClassID() const {
-  return FWL_CLASSHASH_Form;
-}
-
 FX_BOOL CFWL_FormImp::IsInstance(const CFX_WideStringC& wsClass) const {
   if (wsClass == CFX_WideStringC(FWL_CLASS_Form))
     return TRUE;
   return CFWL_WidgetImp::IsInstance(wsClass);
 }
 
 FWL_ERR CFWL_FormImp::Initialize() {
   if (CFWL_WidgetImp::Initialize() != FWL_ERR_Succeeded)
     return FWL_ERR_Indefinite;
   RegisterForm();
@@ skipping 1022 matching lines @@
 }
 void CFWL_FormImpDelegate::OnWindowMove(CFWL_MsgWindowMove* pMsg) {
   m_pOwner->m_pProperties->m_rtWidget.left = pMsg->m_fx;
   m_pOwner->m_pProperties->m_rtWidget.top = pMsg->m_fy;
 }
 void CFWL_FormImpDelegate::OnClose(CFWL_MsgClose* pMsg) {
   CFWL_EvtClose eClose;
   eClose.m_pSrcTarget = m_pOwner->m_pInterface;
   m_pOwner->DispatchEvent(&eClose);
 }