Remove header files that only have includes.

fpdfsdk/include/fsdk_define.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 FPDFSDK_INCLUDE_FSDK_DEFINE_H_
 #define FPDFSDK_INCLUDE_FSDK_DEFINE_H_
 
-#include "core/include/fpdfapi/fpdfapi.h"
 #include "core/include/fpdfapi/fpdf_module.h"
 #include "core/include/fpdfapi/fpdf_pageobj.h"
 #include "core/include/fpdfapi/fpdf_parser.h"
 #include "core/include/fpdfapi/fpdf_render.h"
 #include "core/include/fpdfapi/fpdf_serial.h"
 #include "core/include/fpdfdoc/fpdf_doc.h"
 #include "core/include/fpdfdoc/fpdf_vt.h"
 #include "core/include/fxge/fx_ge.h"
 #include "core/include/fxge/fx_ge_win32.h"
 #include "public/fpdfview.h"
@@ skipping 12 matching lines @@
 #define FX_COLORREFTOARGB(rgb)                                   \
   ((FX_DWORD)0xFF000000 | (((FX_DWORD)rgb & 0x000000FF) << 16) | \
    ((FX_DWORD)rgb & 0x0000FF00) | (((FX_DWORD)rgb & 0x00FF0000) >> 16))
 
 typedef unsigned int FX_UINT;
 class CRenderContext;
 class IFSDK_PAUSE_Adapter;
 
 class CPDF_CustomAccess final : public IFX_FileRead {
  public:
-  CPDF_CustomAccess(FPDF_FILEACCESS* pFileAccess);
+  explicit CPDF_CustomAccess(FPDF_FILEACCESS* pFileAccess);
   ~CPDF_CustomAccess() override {}
 
   // IFX_FileRead
   FX_FILESIZE GetSize() override { return m_FileAccess.m_FileLen; }
   void Release() override { delete this; }
   FX_BOOL ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) override;
 
  private:
   FPDF_FILEACCESS m_FileAccess;
 };
@@ skipping 28 matching lines @@
                             int rotate,
                             int flags,
                             FX_BOOL bNeedToRestore,
                             IFSDK_PAUSE_Adapter* pause);
 
 void CheckUnSupportError(CPDF_Document* pDoc, FX_DWORD err_code);
 void CheckUnSupportAnnot(CPDF_Document* pDoc, const CPDF_Annot* pPDFAnnot);
 void ProcessParseError(FX_DWORD err_code);
 
 #endif  // FPDFSDK_INCLUDE_FSDK_DEFINE_H_