Merge to XFA: Fix ALL the include guards.

core/src/fxcrt/fx_arabic.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 _FX_ARABIC_IMP
-#define _FX_ARABIC_IMP
+#ifndef CORE_SRC_FXCRT_FX_ARABIC_H_
+#define CORE_SRC_FXCRT_FX_ARABIC_H_
+
 typedef struct _FX_ARABICCHARRANGE {
     FX_WCHAR wStart;
     FX_WCHAR wEnd;
 } FX_ARABICCHARRANGE;
 class CFX_ArabicChar : public IFX_ArabicChar
 {
 public:
     virtual void                Release()
     {
         delete this;
@@ skipping 180 matching lines @@
 private:
     ~CFX_BidiChar() { }
     FX_BOOL             m_bSeparateNeutral;
     FX_INT32    m_iCurStart;
     FX_INT32    m_iCurCount;
     FX_INT32    m_iCurBidi;
     FX_INT32    m_iLastBidi;
     FX_INT32    m_iLastStart;
     FX_INT32    m_iLastCount;
 };
-#endif
+
+#endif  // CORE_SRC_FXCRT_FX_ARABIC_H_