Cleanup default FWL params part I

xfa/fxfa/app/xfa_ffcheckbutton.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/fxfa/app/xfa_ffcheckbutton.h"
 
 #include "xfa/fwl/core/cfwl_checkbox.h"
 #include "xfa/fwl/core/cfwl_msgmouse.h"
@@ skipping 259 matching lines @@
   m_pDataAcc->SetCheckState(eCheckState, true);
   return true;
 }
 
 bool CXFA_FFCheckButton::IsDataChanged() {
   XFA_CHECKSTATE eCheckState = FWLState2XFAState();
   return m_pDataAcc->GetCheckState() != eCheckState;
 }
 void CXFA_FFCheckButton::SetFWLCheckState(XFA_CHECKSTATE eCheckState) {
   if (eCheckState == XFA_CHECKSTATE_Neutral) {
-    m_pNormalWidget->SetStates(FWL_STATE_CKB_Neutral, true);
+    m_pNormalWidget->SetStates(FWL_STATE_CKB_Neutral);
   } else {
-    m_pNormalWidget->SetStates(FWL_STATE_CKB_Checked,
-                               eCheckState == XFA_CHECKSTATE_On);
+    if (eCheckState == XFA_CHECKSTATE_On)
+      m_pNormalWidget->SetStates(FWL_STATE_CKB_Checked);
+    else
+      m_pNormalWidget->RemoveStates(FWL_STATE_CKB_Checked);
   }
 }
 bool CXFA_FFCheckButton::UpdateFWLData() {
   if (!m_pNormalWidget) {
     return false;
   }
   XFA_CHECKSTATE eState = m_pDataAcc->GetCheckState();
   SetFWLCheckState(eState);
   m_pNormalWidget->Update();
   return true;
@@ skipping 34 matching lines @@
     default:
       break;
   }
   m_pOldDelegate->OnProcessEvent(pEvent);
 }
 
 void CXFA_FFCheckButton::OnDrawWidget(CFX_Graphics* pGraphics,
                                       const CFX_Matrix* pMatrix) {
   m_pOldDelegate->OnDrawWidget(pGraphics, pMatrix);
 }