Clean up fx_ge.h and IWYU.

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/fpdfapi/fpdf_parser/include/cpdf_parser.h"
 #include "core/fpdfdoc/include/fpdf_doc.h"
-#include "core/fxge/include/fx_ge.h"
-#include "core/fxge/include/fx_ge_win32.h"
 #include "public/fpdfview.h"
 
 #ifdef PDF_ENABLE_XFA
 #include "fpdfsdk/fpdfxfa/include/fpdfxfa_doc.h"
 #endif  // PDF_ENABLE_XFA
 
 #ifdef _WIN32
 #include <math.h>
 #include <tchar.h>
 #endif
@@ skipping 32 matching lines @@
   FPDF_FILEACCESS m_FileAccess;
 #ifdef PDF_ENABLE_XFA
   uint8_t m_Buffer[512];
   uint32_t m_BufferOffset;
 #endif  // PDF_ENABLE_XFA
 };
 
 #ifdef PDF_ENABLE_XFA
 class CFPDF_FileStream : public IFX_FileStream {
  public:
-  CFPDF_FileStream(FPDF_FILEHANDLER* pFS);
+  explicit CFPDF_FileStream(FPDF_FILEHANDLER* pFS);
   virtual ~CFPDF_FileStream() {}
 
   virtual IFX_FileStream* Retain();

[dsinclair, 2016/05/26 02:55:17]

Should any of these virtuals be overrides?

[Lei Zhang, 2016/05/26 04:23:16]

Done.

   virtual void Release();
 
   virtual FX_FILESIZE GetSize();
   virtual FX_BOOL IsEOF();
   virtual FX_FILESIZE GetPosition() { return m_nCurPos; }
   virtual void SetPosition(FX_FILESIZE pos) { m_nCurPos = pos; }
   virtual FX_BOOL ReadBlock(void* buffer, FX_FILESIZE offset, size_t size);
   virtual size_t ReadBlock(void* buffer, size_t size);
   virtual FX_BOOL WriteBlock(const void* buffer,
                              FX_FILESIZE offset,
@@ skipping 40 matching lines @@
                             int rotate,
                             int flags,
                             FX_BOOL bNeedToRestore,
                             IFSDK_PAUSE_Adapter* pause);
 
 void CheckUnSupportError(CPDF_Document* pDoc, uint32_t err_code);
 void CheckUnSupportAnnot(CPDF_Document* pDoc, const CPDF_Annot* pPDFAnnot);
 void ProcessParseError(CPDF_Parser::Error err);
 
 #endif  // FPDFSDK_INCLUDE_FSDK_DEFINE_H_