Simplify reference management in SkPDF

src/pdf/SkPDFResourceDict.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkPDFResourceDict.h"
 #include "SkPostConfig.h"
 
@@ skipping 59 matching lines @@
 
 SkPDFObject* SkPDFResourceDict::insertResourceAsReference(
         SkPDFResourceType type, int key, SkPDFObject* value) {
     SkAutoTUnref<SkPDFObjRef> ref(SkNEW_ARGS(SkPDFObjRef, (value)));
     insertResource(type, key, ref);
     fResources.add(value);
 
     return value;
 }
 
-void SkPDFResourceDict::getReferencedResources(
-        const SkTSet<SkPDFObject*>& knownResourceObjects,
-        SkTSet<SkPDFObject*>* newResourceObjects,
-        bool recursive) const {
-    // TODO: reserve not correct if we need to recursively explore.
-    newResourceObjects->setReserve(newResourceObjects->count() +
-                                   fResources.count());
-
-    for (int i = 0; i < fResources.count(); i++) {
-        if (!knownResourceObjects.contains(fResources[i]) &&
-                !newResourceObjects->contains(fResources[i])) {
-            newResourceObjects->add(fResources[i]);
-            fResources[i]->ref();
-            if (recursive) {
-                fResources[i]->getResources(knownResourceObjects,
-                                            newResourceObjects);
-            }
-        }
-    }
-}
-
 SkString SkPDFResourceDict::getResourceName(
         SkPDFResourceType type, int key) {
     SkString keyString;
     keyString.printf("%c%d", get_resource_type_prefix(type), key);
     return keyString;
 }
 
 SkPDFObject* SkPDFResourceDict::insertResource(
         SkPDFResourceType type, int key, SkPDFObject* value) {
     SkPDFDict* typeDict = fTypes[type];
     if (NULL == typeDict) {
         SkAutoTUnref<SkPDFDict> newDict(SkNEW(SkPDFDict()));
         SkAutoTUnref<SkPDFName> typeName(
                 SkNEW_ARGS(SkPDFName, (get_resource_type_name(type))));
         insert(typeName, newDict);  // ref counting handled here
         fTypes[type] = newDict;
         typeDict = newDict.get();
     }
 
     SkAutoTUnref<SkPDFName> keyName(
             SkNEW_ARGS(SkPDFName, (getResourceName(type, key))));
     typeDict->insert(keyName, value);
     return value;
 }