SkPDF: use sk_make_sp<T> when it makes sense.

src/pdf/SkPDFTypes.h

 /*
  * 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.
  */
 
 
 #ifndef SkPDFTypes_DEFINED
 #define SkPDFTypes_DEFINED
@@ skipping 91 matching lines @@
 
     /** SkPDFUnion::Name(const SkString&) does not assume that the
         passed string is already a valid name and it will escape the
         string. */
     static SkPDFUnion Name(const SkString&);
 
     /** SkPDFUnion::String will encode the passed string. */
     static SkPDFUnion String(const SkString&);
 
     /** This function DOES take ownership of the object. E.g.
-          sk_sp<SkPDFDict> dict(new SkPDFDict);
+          auto dict = sk_make_sp<SkPDFDict>();
           dict->insert(.....);
           SkPDFUnion u = SkPDFUnion::Object(dict.detach()) */
     static SkPDFUnion Object(SkPDFObject*);
 
     /** This function DOES take ownership of the object. E.g.
           sk_sp<SkPDFBitmap> image(
                  SkPDFBitmap::Create(fCanon, bitmap));
           SkPDFUnion u = SkPDFUnion::ObjRef(image.detach()) */
     static SkPDFUnion ObjRef(SkPDFObject*);
 
@@ skipping 270 matching lines @@
 };
 
 #ifdef SK_PDF_IMAGE_STATS
 extern SkAtomic<int> gDrawImageCalls;
 extern SkAtomic<int> gJpegImageObjects;
 extern SkAtomic<int> gRegularImageObjects;
 extern void SkPDFImageDumpStats();
 #endif // SK_PDF_IMAGE_STATS
 
 #endif