SkPDF: Add sk_sp setters; .release() becomes std::move()

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 18 matching lines @@
         // currently used by Skia: ColorSpace, Shading, Properties
         kResourceTypeCount
     };
 
     /** Create a PDF resource dictionary.
      *  The full set of ProcSet entries is automatically created for backwards
      *  compatibility, as recommended by the PDF spec.
      *
      *  Any arguments can be nullptr.
      */
-    static SkPDFDict* Create(
+    static sk_sp<SkPDFDict> Make(
         const SkTDArray<SkPDFObject*>* gStateResources,
         const SkTDArray<SkPDFObject*>* patternResources,
         const SkTDArray<SkPDFObject*>* xObjectResources,
         const SkTDArray<SkPDFObject*>* fontResources);
 
     /**
      * 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);
 };
 
 #endif