Fixup incorrect include guards.

xfa/include/fwl/core/fwl_widget.h

 // 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
 
-#ifndef _FWL_WIDGET_H
-#define _FWL_WIDGET_H
+#ifndef XFA_INCLUDE_FWL_CORE_FWL_WIDGET_H_
+#define XFA_INCLUDE_FWL_CORE_FWL_WIDGET_H_
+
 class IFWL_Target;
 class IFWL_ThemeProvider;
 class CFWL_WidgetImpProperties;
 class IFWL_DataProvider;
 class IFWL_Widget;
 class IFWL_WidgetDelegate;
 class IFWL_Custom;
 class IFWL_Proxy;
 class IFWL_Form;
 
@@ skipping 94 matching lines @@
 typedef struct _FWL_ACCEL {
   FX_DWORD dwKey;
   FX_DWORD dwCmd;
 } FWL_ACCEL;
 typedef CFX_MapPtrTemplate<FX_DWORD, FX_DWORD> CFX_MapAccelerators;
 FWL_ERR FWL_Accelerator_SetApp(CFX_MapAccelerators* pMapAccel);
 FWL_ERR FWL_Accelerator_SetThread(CFX_MapAccelerators* pMapAccel);
 FWL_ERR FWL_Accelerator_SetForm(IFWL_Form* pFrom,
                                 CFX_MapAccelerators* pMapAccel);
 FWL_ERR FWL_EnabelWidget(IFWL_Widget* widget, FX_BOOL bEnable);
-#endif
+
+#endif  // XFA_INCLUDE_FWL_CORE_FWL_WIDGET_H_