pdfviewer: load files with missing xref (we need in order to help with testing, as most good pdfx i…

experimental/PdfViewer/pdfparser/native/SkNativeParsedPDF.h

 #ifndef EXPERIMENTAL_PDFVIEWER_PDFPARSER_NATIVE_SKNATIVEPARSEDPDF_H_
 #define EXPERIMENTAL_PDFVIEWER_PDFPARSER_NATIVE_SKNATIVEPARSEDPDF_H_
 
 #include "SkRect.h"
 #include "SkTDArray.h"
 
 class SkCanvas;
 
 class SkPdfAllocator;
 class SkPdfMapper;
@@ skipping 54 matching lines @@
 
     SkPdfObject* resolveReference(const SkPdfObject* ref);
 
     // Reports an approximation of all the memory usage.
     size_t bytesUsed() const;
 
 private:
 
     // Takes ownership of bytes.
     void init(const void* bytes, size_t length);
+    void loadWithoutXRef();
 
     const unsigned char* readCrossReferenceSection(const unsigned char* xrefStart, const unsigned char* trailerEnd);
-    long readTrailer(const unsigned char* trailerStart, const unsigned char* trailerEnd, bool storeCatalog);
+    const unsigned char* readTrailer(const unsigned char* trailerStart, const unsigned char* trailerEnd, bool storeCatalog, long* prev, bool skipKeyword);
 
     // TODO(edisonn): updates not supported right now, generation ignored
     void addCrossSectionInfo(int id, int generation, int offset, bool isFreed);
     static void reset(PublicObjectEntry* obj) {
         obj->fObj = NULL;
         obj->fResolvedReference = NULL;
         obj->fOffset = -1;
     }
 
     SkPdfObject* readObject(int id/*, int generation*/);
 
     void fillPages(SkPdfPageTreeNodeDictionary* tree);
 
     // private fields
     SkPdfAllocator* fAllocator;
     SkPdfMapper* fMapper;
     const unsigned char* fFileContent;
     size_t fContentLength;
     const SkPdfObject* fRootCatalogRef;
     SkPdfCatalogDictionary* fRootCatalog;
 
     mutable SkTDArray<PublicObjectEntry> fObjects;
     SkTDArray<SkPdfPageObjectDictionary*> fPages;
 };
 
 #endif  // EXPERIMENTAL_PDFVIEWER_PDFPARSER_NATIVE_SKNATIVEPARSEDPDF_H_