Fixup incorrect include guards.

xfa/include/fwl/basewidget/fwl_picturebox.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_PICTUREBOX_H
-#define _FWL_PICTUREBOX_H
+#ifndef XFA_INCLUDE_FWL_BASEWIDGET_FWL_PICTUREBOX_H_
+#define XFA_INCLUDE_FWL_BASEWIDGET_FWL_PICTUREBOX_H_
+
 class CFWL_WidgetImpProperties;
 class IFWL_Widget;
 class IFWL_PictureBoxDP;
 class IFWL_PictureBox;
 #define FWL_CLASS_PictureBox L"FWL_PICTUREBOX"
 #define FWL_CLASSHASH_PictureBox 2974721741
 #define FWL_STYLEEXT_PTB_Left 0L << 0
 #define FWL_STYLEEXT_PTB_Center 1L << 0
 #define FWL_STYLEEXT_PTB_Right 2L << 0
 #define FWL_STYLEEXT_PTB_Top 0L << 2
@@ skipping 23 matching lines @@
 };
 
 class IFWL_PictureBox : public IFWL_Widget {
  public:
   static IFWL_PictureBox* Create(const CFWL_WidgetImpProperties& properties,
                                  IFWL_Widget* pOuter);
 
  protected:
   IFWL_PictureBox();
 };
-#endif
+
+#endif  // XFA_INCLUDE_FWL_BASEWIDGET_FWL_PICTUREBOX_H_