Fix ALL the include guards.

core/include/fxge/fx_ge.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_GE_H_
-#define _FX_GE_H_
-#ifndef _FX_DIB_H_
+#ifndef CORE_INCLUDE_FXGE_FX_GE_H_
+#define CORE_INCLUDE_FXGE_FX_GE_H_
+
 #include "fx_dib.h"
-#endif
-#ifndef _FX_FONT_H_
 #include "fx_font.h"
-#endif
+
 class CFX_ClipRgn;
 class CFX_PathData;
 class CFX_GraphStateData;
 class CFX_Font;
 class CFX_FontMgr;
 class CFX_FontCache;
 class CFX_FaceCache;
 class CFX_RenderDevice;
 class IFX_RenderDeviceDriver;
 class CCodec_ModuleMgr;
 class IFXG_PaintModuleMgr;
+
 class CFX_GEModule 
 {
 public:
 
     static void                         Create();
 
     static void                         Use(CFX_GEModule* pMgr);
 
     static CFX_GEModule*        Get();
 
@@ skipping 686 matching lines @@
     void                        OutputPath(const CFX_PathData* pPathData, const CFX_AffineMatrix* pObject2Device);
 
     void                        SetGraphState(const CFX_GraphStateData* pGraphState);
 
     void                        SetColor(FX_DWORD color, int alpha_flag, void* pIccTransform);
 
     void                        FindPSFontGlyph(CFX_FaceCache* pFaceCache, CFX_Font* pFont, const FXTEXT_CHARPOS& charpos, int& ps_fontnum, int &ps_glyphindex);
 
     void                        WritePSBinary(FX_LPCBYTE data, int len);
 };
-#endif
+
+#endif  // CORE_INCLUDE_FXGE_FX_GE_H_