Simplify PDFium by removing code that's not used in the open source repo.

fpdfsdk/include/fpdfview.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 _FPDFVIEW_H_
 #define _FPDFVIEW_H_
 
@@ skipping 108 matching lines @@
 extern const char g_ModuleCodes[];
 
 // Exported Functions
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 // Function: FPDF_InitLibrary
 //                      Initialize the FPDFSDK library 
 // Parameters:
-//                      hInstance       -       For WIN32 system only: the instance of the executable or DLL module.
+//                      None
 // Return value:
 //                      None.
 // Comments:
 //                      You have to call this function before you can call any PDF processing functions.
 
-DLLEXPORT void STDCALL FPDF_InitLibrary(void* hInstance);
+DLLEXPORT void STDCALL FPDF_InitLibrary();
 
 
 // Function: FPDF_DestroyLibary
 //                      Release all resources allocated by the FPDFSDK library.
 // Parameters:
 //                      None.
 // Return value:
 //                      None.
 // Comments:
 //                      You can call this function to release all memory blocks allocated by the library. 
@@ skipping 464 matching lines @@
 // Return value:
 //                      The handle of the dest.
 //
 DLLEXPORT FPDF_DEST STDCALL FPDF_GetNamedDestByName(FPDF_DOCUMENT document,FPDF_BYTESTRING name);
 
 #ifdef __cplusplus
 };
 #endif
 
 #endif // _FPDFVIEW_H_