Allow external font-path configuration from pdfium_test.

public/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
 
 // NOTE: External docs refer to this file as "fpdfview.h", so do not rename
 // despite lack of consitency with other public files.
 
 #ifndef PUBLIC_FPDFVIEW_H_
@@ skipping 106 matching lines @@
 extern "C" {
 #endif
 
 // Function: FPDF_InitLibrary
 //          Initialize the FPDFSDK library
 // Parameters:
 //          None
 // Return value:
 //          None.
 // Comments:
+//          Convenience function to call FPDF_InitLibraryWithConfig() for
+//          backwards comatibility purposes.
+DLLEXPORT void STDCALL FPDF_InitLibrary();
+
+// Process-wide options for initializing library.
+typedef struct FPDF_LIBRARY_CONFIG_ {
+  // Version number of the interface. Currently must be 1.
+  int version;
+
+  // Array of paths to scan in place of the defaults when using built-in
+  // FXGE font loading code. The array is terminated by a NULL pointer.
+  // The Array may be NULL itself to use the default paths. May be ignored
+  // entirely depending upon the platform.
+  const char** m_pUserFontPaths;
+} FPDF_LIBRARY_CONFIG;
+
+// Function: FPDF_InitLibraryWithConfig
+//          Initialize the FPDFSDK library
+// Parameters:
+//          cfg - configuration information as above.
+// Return value:
+//          None.
+// Comments:
 //          You have to call this function before you can call any PDF
 //          processing functions.
-DLLEXPORT void STDCALL FPDF_InitLibrary();
+DLLEXPORT void STDCALL FPDF_InitLibraryWithConfig(
+    const FPDF_LIBRARY_CONFIG* config);
 
 // 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 658 matching lines @@
 DLLEXPORT FPDF_DEST STDCALL FPDF_GetNamedDest(FPDF_DOCUMENT document,
                                               int index,
                                               void* buffer,
                                               long* buflen);
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif  // PUBLIC_FPDFVIEW_H_