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

src/pdf/SkPDFCatalog.cpp

 
 /*
  * 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.
  */
 
 
 #include "SkPDFCatalog.h"
 #include "SkPDFTypes.h"
 #include "SkStream.h"
 #include "SkTypes.h"
 
-SkPDFCatalog::SkPDFCatalog(SkPDFDocument::Flags flags)
-    : fFirstPageCount(0),
-      fNextObjNum(1),
-      fNextFirstPageObjNum(0),
-      fDocumentFlags(flags) {
-}
+SkPDFCatalog::SkPDFCatalog()
+    : fFirstPageCount(0)
+    , fNextObjNum(1)
+    , fNextFirstPageObjNum(0) {}
 
 SkPDFCatalog::~SkPDFCatalog() {
     fSubstituteResourcesRemaining.safeUnrefAll();
     fSubstituteResourcesFirstPage.safeUnrefAll();
 }
 
 SkPDFObject* SkPDFCatalog::addObject(SkPDFObject* obj, bool onFirstPage) {
     if (findObjectIndex(obj) != -1) {  // object already added
         return obj;
     }
@@ skipping 120 matching lines @@
 
 SkPDFObject* SkPDFCatalog::getSubstituteObject(SkPDFObject* object) {
     for (int i = 0; i < fSubstituteMap.count(); ++i) {
         if (object == fSubstituteMap[i].fOriginal) {
             return fSubstituteMap[i].fSubstitute;
         }
     }
     return object;
 }