Merge to XFA: Fix ALL the include guards.

core/src/fpdfapi/fpdf_font/font_int.h

Index: core/src/fpdfapi/fpdf_font/font_int.h
diff --git a/core/src/fpdfapi/fpdf_font/font_int.h b/core/src/fpdfapi/fpdf_font/font_int.h
index 56454286df1676d228998007e5b8acfdeab54bfd..697ccffafd26e1845e34376fbd31bb4fa1a2ff6f 100644
--- a/core/src/fpdfapi/fpdf_font/font_int.h
+++ b/core/src/fpdfapi/fpdf_font/font_int.h
@@ -3,6 +3,8 @@
 // found in the LICENSE file.
  
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+#ifndef CORE_SRC_FPDFAPI_FPDF_FONT_FONT_INT_H_
+#define CORE_SRC_FPDFAPI_FPDF_FONT_FONT_INT_H_
 
 typedef void* FXFT_Library;
 class CPDF_CMapManager 
@@ -170,3 +172,5 @@ public:
     CPDF_FontCharMap(CPDF_Font* pFont);
     CPDF_Font*		m_pFont;
 };
+
+#endif  // CORE_SRC_FPDFAPI_FPDF_FONT_FONT_INT_H_