Move SkTypeface to sk_sp.

src/pdf/SkPDFFont.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include <ctype.h>
 
 #include "SkData.h"
@@ skipping 1309 matching lines @@
                                SkTypeface* typeface,
                                uint16_t glyphID)
     : SkPDFFont(info, typeface, nullptr) {
     this->populate(glyphID);
 }
 
 SkPDFType3Font::~SkPDFType3Font() {}
 
 bool SkPDFType3Font::populate(uint16_t glyphID) {
     SkPaint paint;
-    paint.setTypeface(typeface());
+    paint.setTypeface(sk_ref_sp(this->typeface()));
     paint.setTextSize(1000);
     const SkSurfaceProps props(0, kUnknown_SkPixelGeometry);
     SkAutoGlyphCache autoCache(paint, &props, nullptr);
     SkGlyphCache* cache = autoCache.getCache();
     // If fLastGlyphID isn't set (because there is not fFontInfo), look it up.
     if (lastGlyphID() == 0) {
         setLastGlyphID(cache->getGlyphCount() - 1);
     }
 
     adjustGlyphRangeForSingleByteEncoding(glyphID);
@@ skipping 95 matching lines @@
     }
     return *canon->fCanEmbedTypeface.set(id, canEmbed);
 }
 
 void SkPDFFont::drop() {
     fTypeface = nullptr;
     fFontInfo = nullptr;
     fDescriptor = nullptr;
     this->SkPDFDict::drop();
 }