Remove events which are not processed

xfa/fwl/core/ifwl_combobox.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/ifwl_combobox.h"
 
 #include "third_party/base/ptr_util.h"
 #include "xfa/fde/cfde_txtedtengine.h"
@@ skipping 327 matching lines @@
     return DisForm_ShowDropList(bActivate);
   if (IsDropListVisible() == bActivate)
     return;
   if (!m_pComboBoxProxy)
     InitProxyForm();
 
   m_pComboBoxProxy->Reset();
   if (!bActivate) {
     m_pComboBoxProxy->EndDoModal();
 
-    CFWL_EvtCmbCloseUp ev;
-    ev.m_pSrcTarget = this;
-    DispatchEvent(&ev);
-
     m_bLButtonDown = false;
     m_pListBox->SetNotifyOwner(true);
     SetFocus(true);
     return;
   }
 
   m_pListBox->ChangeSelected(m_iCurSel);
   ResetListItemAlignment();
 
   uint32_t dwStyleAdd = m_pProperties->m_dwStyleExes &
@@ skipping 781 matching lines @@
       else
         iCurSel++;
     }
     m_iCurSel = iCurSel;
     SyncEditText(m_iCurSel);
     return;
   }
   if (m_pEdit)
     m_pEdit->GetDelegate()->OnProcessMessage(pMsg);
 }