Simplify reference management in SkPDF

src/pdf/SkPDFResourceDict.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkPDFResourceDict_DEFINED
 #define SkPDFResourceDict_DEFINED
 
@@ skipping 37 matching lines @@
      *  @param type  The type of resource being entered, like
      *    kPattern_ResourceType or kExtGState_ResourceType.
      *  @param key   The resource key, should be unique within its type.
      *  @param value The resource itself.
      *  @return The value argument is returned.
      */
     SkPDFObject* insertResourceAsReference(SkPDFResourceType type, int key,
                                            SkPDFObject* value);
 
     /**
-     * Gets resources inserted into this dictionary as a reference.
-     *
-     * @param knownResourceObjects Set containing currently known resources.
-     *     Resources in the dict and this set will not be added to the output.
-     * @param newResourceObjects   Output set to which non-preexisting resources
-     *     will be added.
-     * @param recursive            Whether or not to add resources of resources.
-     */
-    void getReferencedResources(
-            const SkTSet<SkPDFObject*>& knownResourceObjects,
-            SkTSet<SkPDFObject*>* newResourceObjects,
-            bool recursive) const;
-
-    /**
      * Returns the name for the resource that will be generated by the resource
      * dict.
      *
      *  @param type  The type of resource being entered, like
      *    kPattern_ResourceType or kExtGState_ResourceType.
      *  @param key   The resource key, should be unique within its type.
      */
     static SkString getResourceName(SkPDFResourceType type, int key);
 
 private:
@@ skipping 10 matching lines @@
     SkPDFObject* insertResource(SkPDFResourceType type, int key,
                                 SkPDFObject* value);
 
     SkTSet<SkPDFObject*> fResources;
 
     SkTDArray<SkPDFDict*> fTypes;
     typedef SkPDFDict INHERITED;
 };
 
 #endif