SkPDF s/SkAutoTDelete/std::unique_ptr/

src/pdf/SkPDFMetadata.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkPDFMetadata_DEFINED
 #define SkPDFMetadata_DEFINED
 
 #include "SkDocument.h"
 #include "SkTime.h"
 
 class SkPDFObject;
 
 struct SkPDFMetadata {
     SkTArray<SkDocument::Attribute> fInfo;
-    SkAutoTDelete<const SkTime::DateTime> fCreation;
-    SkAutoTDelete<const SkTime::DateTime> fModified;
+    std::unique_ptr<const SkTime::DateTime> fCreation;
+    std::unique_ptr<const SkTime::DateTime> fModified;
 
     SkPDFObject* createDocumentInformationDict() const;
 
 #ifdef SK_PDF_GENERATE_PDFA
     struct UUID {
         uint8_t fData[16];
     };
     UUID uuid() const;
     static SkPDFObject* CreatePdfId(const UUID& doc, const UUID& instance);
     SkPDFObject* createXMPObject(const UUID& doc, const UUID& instance) const;
 #endif  // SK_PDF_GENERATE_PDFA
 };
 
 #endif  // SkPDFMetadata_DEFINED