Merge to XFA: Fix ALL the include guards.

core/include/fxcrt/fx_basic.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_BASIC_H_
-#define _FX_BASIC_H_
+#ifndef CORE_INCLUDE_FXCRT_FX_BASIC_H_
+#define CORE_INCLUDE_FXCRT_FX_BASIC_H_
 
 #include "fx_memory.h"
 #include "fx_stream.h"
 #include "fx_string.h"
 #include "fx_system.h"
 
 // The FX_ArraySize(arr) macro returns the # of elements in an array arr.
 // The expression is a compile-time constant, and therefore can be
 // used in defining new arrays, for example.  If you use FX_ArraySize on
 // a pointer by mistake, you will get a compile-time error.
@@ skipping 1600 matching lines @@
     FX_FLOAT b;
     FX_FLOAT c;
     FX_FLOAT d;
     FX_FLOAT e;
     FX_FLOAT f;
     FX_FLOAT g;
     FX_FLOAT h;
     FX_FLOAT i;
 };
 
-#endif
+#endif  // CORE_INCLUDE_FXCRT_FX_BASIC_H_