Cleaning up nits in fwl/core files.

xfa/fwl/core/ifwl_comboboxproxy.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_comboboxproxy.h"
 
 #include "xfa/fwl/core/fwl_noteimp.h"
 #include "xfa/fwl/core/ifwl_app.h"
@@ skipping 23 matching lines @@
           OnLButtonDown(pMsg);
           break;
         case FWL_MouseCommand::LeftButtonUp:
           OnLButtonUp(pMsg);
           break;
         default:
           break;
       }
       break;
     }
-    case CFWL_MessageType::Deactivate:
-      OnDeactive(static_cast<CFWL_MsgDeactivate*>(pMessage));
-      break;
     case CFWL_MessageType::KillFocus:
       OnFocusChanged(static_cast<CFWL_MsgKillFocus*>(pMessage), false);
       break;
     case CFWL_MessageType::SetFocus:
       OnFocusChanged(static_cast<CFWL_MsgKillFocus*>(pMessage), true);
       break;
     default:
       break;
   }
   IFWL_Widget::OnProcessMessage(pMessage);
@@ skipping 39 matching lines @@
     rect.left = rect.top = 0;
     if (!rect.Contains(pMsg->m_fx, pMsg->m_fy) &&
         m_pComboBox->IsDropListVisible()) {
       m_pComboBox->ShowDropList(false);
     }
   } else {
     m_bLButtonUpSelf = true;
   }
 }
 
-void IFWL_ComboBoxProxy::OnDeactive(CFWL_MsgDeactivate* pMsg) {
-  m_pComboBox->ShowDropList(false);
-}
-
 void IFWL_ComboBoxProxy::OnFocusChanged(CFWL_MsgKillFocus* pMsg, bool bSet) {
   if (bSet)
     return;
 
   if (!pMsg->m_pSetFocus)
     m_pComboBox->ShowDropList(false);
 }