Revert of Move SkTypeface to sk_sp.

src/fonts/SkGScalerContext.h

Index: src/fonts/SkGScalerContext.h
diff --git a/src/fonts/SkGScalerContext.h b/src/fonts/SkGScalerContext.h
index 3eb25a81da1c3416d9438c39a119447801618147..69d02ddf114132197be16d1841459502d58c45b1 100644
--- a/src/fonts/SkGScalerContext.h
+++ b/src/fonts/SkGScalerContext.h
@@ -13,9 +13,10 @@
 
 class SkGTypeface : public SkTypeface {
 public:
-    SkGTypeface(sk_sp<SkTypeface> proxy, const SkPaint&);
+    SkGTypeface(SkTypeface* proxy, const SkPaint&);
+    virtual ~SkGTypeface();
 
-    SkTypeface* proxy() const { return fProxy.get(); }
+    SkTypeface* proxy() const { return fProxy; }
     const SkPaint& paint() const { return fPaint; }
 
 protected:
@@ -42,8 +43,8 @@
                           size_t length, void* data) const override;
 
 private:
-    sk_sp<SkTypeface>   fProxy;
-    SkPaint             fPaint;
+    SkTypeface* fProxy;
+    SkPaint     fPaint;
 };
 
 #endif