Cleanup IFWL_Adapter interfaces.

xfa/fwl/basewidget/fwl_pushbuttonimp.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/basewidget/fwl_pushbuttonimp.h"
 
 #include "xfa/fde/tto/fde_textout.h"
 #include "xfa/fwl/basewidget/ifwl_pushbutton.h"
@@ skipping 65 matching lines @@
     }
     FX_FLOAT* fcaption =
         static_cast<FX_FLOAT*>(GetThemeCapacity(CFWL_WidgetCapacity::Margin));
     rect.Inflate(*fcaption, *fcaption);
     CFWL_WidgetImp::GetWidgetRect(rect, TRUE);
   } else {
     rect = m_pProperties->m_rtWidget;
   }
   return FWL_ERR_Succeeded;
 }
-FWL_ERR CFWL_PushButtonImp::SetStates(uint32_t dwStates, FX_BOOL bSet) {
+
+void CFWL_PushButtonImp::SetStates(uint32_t dwStates, FX_BOOL bSet) {
   if ((dwStates & FWL_WGTSTATE_Disabled) && bSet) {
     m_pProperties->m_dwStates = FWL_WGTSTATE_Disabled;
-    return FWL_ERR_Succeeded;
+    return;
   }
-  return CFWL_WidgetImp::SetStates(dwStates, bSet);
+  CFWL_WidgetImp::SetStates(dwStates, bSet);
 }
+
 FWL_ERR CFWL_PushButtonImp::Update() {
   if (IsLocked()) {
     return FWL_ERR_Indefinite;
   }
   if (!m_pProperties->m_pThemeProvider) {
     m_pProperties->m_pThemeProvider = GetAvailableTheme();
   }
   UpdateTextOutStyles();
   GetClientRect(m_rtClient);
   m_rtCaption = m_rtClient;
@@ skipping 446 matching lines @@
     CFWL_EvtClick wmClick;
     wmClick.m_pSrcTarget = m_pOwner->m_pInterface;
     m_pOwner->DispatchEvent(&wmClick);
     return;
   }
   if (pMsg->m_dwKeyCode != FWL_VKEY_Tab) {
     return;
   }
   m_pOwner->DispatchKeyEvent(pMsg);
 }