PDF: why do we have flags no one uses (or can use)?

src/pdf/SkPDFCatalog.h

 
 /*
  * Copyright 2010 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkPDFCatalog_DEFINED
 #define SkPDFCatalog_DEFINED
 
 #include <sys/types.h>
 
 #include "SkPDFDocument.h"
 #include "SkPDFTypes.h"
 #include "SkRefCnt.h"
 #include "SkTDArray.h"
 
 /** \class SkPDFCatalog
 
     The PDF catalog manages object numbers and file offsets.  It is used
     to create the PDF cross reference table.
 */
 class SkPDFCatalog {
 public:
     /** Create a PDF catalog.
      */
-    explicit SkPDFCatalog(SkPDFDocument::Flags flags);
+    SkPDFCatalog();
     ~SkPDFCatalog();
 
     /** Add the passed object to the catalog.  Refs obj.
      *  @param obj         The object to add.
      *  @param onFirstPage Is the object on the first page.
      *  @return The obj argument is returned.
      */
     SkPDFObject* addObject(SkPDFObject* obj, bool onFirstPage);
 
     /** Inform the catalog of the object's position in the final stream.
      *  The object should already have been added to the catalog.
      *  @param obj         The object to add.
      *  @param offset      The byte offset in the output stream of this object.
      */
     void setFileOffset(SkPDFObject* obj, off_t offset);
 
     /** Get the object number for the passed object.
      *  @param obj         The object of interest.
      */
     int32_t getObjectNumber(SkPDFObject* obj);
 
-    /** Return the document flags in effect for this catalog/document.
-     */
-    SkPDFDocument::Flags getDocumentFlags() const { return fDocumentFlags; }
-
     /** Output the cross reference table for objects in the catalog.
      *  Returns the total number of objects.
      *  @param stream      The writable output stream to send the output to.
      *  @param firstPage   If true, include first page objects only, otherwise
      *                     include all objects not on the first page.
      */
     int32_t emitXrefTable(SkWStream* stream, bool firstPage);
 
     /** Set substitute object for the passed object.
      */
@@ skipping 34 matching lines @@
     SkTSet<SkPDFObject*> fSubstituteResourcesFirstPage;
     SkTSet<SkPDFObject*> fSubstituteResourcesRemaining;
 
     // Number of objects on the first page.
     uint32_t fFirstPageCount;
     // Next object number to assign (on page > 1).
     uint32_t fNextObjNum;
     // Next object number to assign on the first page.
     uint32_t fNextFirstPageObjNum;
 
-    SkPDFDocument::Flags fDocumentFlags;
-
     int findObjectIndex(SkPDFObject* obj);
 
     int assignObjNum(SkPDFObject* obj);
 };
 
 #endif