Merge delegates into IFWL_* classes.

xfa/fwl/core/ifwl_comboedit.cpp

 // 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
 
 #include "xfa/fwl/core/ifwl_comboedit.h"
 
 #include "xfa/fde/cfde_txtedtengine.h"
 #include "xfa/fwl/core/ifwl_combobox.h"
@@ skipping 26 matching lines @@
   } else {
     m_pProperties->m_dwStates &= ~FWL_WGTSTATE_Focused;
     ShowCaret(FALSE);
   }
 }
 
 void IFWL_ComboEdit::SetComboBoxFocus(FX_BOOL bSet) {
   m_pOuter->SetFocus(bSet);
 }
 
-CFWL_ComboEditImpDelegate::CFWL_ComboEditImpDelegate(IFWL_ComboEdit* pOwner)
-    : CFWL_EditImpDelegate(pOwner), m_pOwner(pOwner) {}
-
-void CFWL_ComboEditImpDelegate::OnProcessMessage(CFWL_Message* pMessage) {
+void IFWL_ComboEdit::OnProcessMessage(CFWL_Message* pMessage) {
   if (!pMessage)
     return;
 
   FX_BOOL backDefault = TRUE;
   switch (pMessage->GetClassID()) {
     case CFWL_MessageType::SetFocus: {
-      m_pOwner->m_pProperties->m_dwStates |= FWL_WGTSTATE_Focused;
+      m_pProperties->m_dwStates |= FWL_WGTSTATE_Focused;
       backDefault = FALSE;
       break;
     }
     case CFWL_MessageType::KillFocus: {
-      m_pOwner->m_pProperties->m_dwStates &= ~FWL_WGTSTATE_Focused;
+      m_pProperties->m_dwStates &= ~FWL_WGTSTATE_Focused;
       backDefault = FALSE;
       break;
     }
     case CFWL_MessageType::Mouse: {
       CFWL_MsgMouse* pMsg = static_cast<CFWL_MsgMouse*>(pMessage);
       if ((pMsg->m_dwCmd == FWL_MouseCommand::LeftButtonDown) &&
-          ((m_pOwner->m_pProperties->m_dwStates & FWL_WGTSTATE_Focused) == 0)) {
-        m_pOwner->SetSelected();
-        m_pOwner->SetComboBoxFocus(TRUE);
+          ((m_pProperties->m_dwStates & FWL_WGTSTATE_Focused) == 0)) {
+        SetSelected();
+        SetComboBoxFocus(TRUE);
       }
       break;
     }
     default:
       break;
   }
   if (backDefault)
-    CFWL_EditImpDelegate::OnProcessMessage(pMessage);
+    IFWL_Edit::OnProcessMessage(pMessage);
 }