Remove SkAutoTUnref and SkAutoTDelete from public includes.

src/core/SkMaskGamma.h

Index: src/core/SkMaskGamma.h
diff --git a/src/core/SkMaskGamma.h b/src/core/SkMaskGamma.h
index 94219d42ac3a0c32dc162531a8c6f9d02b8863bb..f90f75a878ed32fb7d90aafe0a3c131aae852efb 100644
--- a/src/core/SkMaskGamma.h
+++ b/src/core/SkMaskGamma.h
@@ -174,11 +174,11 @@ private:
  */
 template <int R_LUM_BITS, int G_LUM_BITS, int B_LUM_BITS> class SkTMaskPreBlend {
 private:
-    SkTMaskPreBlend(const SkTMaskGamma<R_LUM_BITS, G_LUM_BITS, B_LUM_BITS>* parent,
+    SkTMaskPreBlend(sk_sp<const SkTMaskGamma<R_LUM_BITS, G_LUM_BITS, B_LUM_BITS>> parent,
                     const uint8_t* r, const uint8_t* g, const uint8_t* b)
-    : fParent(SkSafeRef(parent)), fR(r), fG(g), fB(b) { }
+    : fParent(std::move(parent)), fR(r), fG(g), fB(b) { }
 
-    SkAutoTUnref<const SkTMaskGamma<R_LUM_BITS, G_LUM_BITS, B_LUM_BITS> > fParent;
+    sk_sp<const SkTMaskGamma<R_LUM_BITS, G_LUM_BITS, B_LUM_BITS>> fParent;
     friend class SkTMaskGamma<R_LUM_BITS, G_LUM_BITS, B_LUM_BITS>;
 public:
     /** Creates a non applicable SkTMaskPreBlend. */
@@ -189,7 +189,7 @@ public:
      * when return value optimization is enabled.
      */
     SkTMaskPreBlend(const SkTMaskPreBlend<R_LUM_BITS, G_LUM_BITS, B_LUM_BITS>& that)
-    : fParent(SkSafeRef(that.fParent.get())), fR(that.fR), fG(that.fG), fB(that.fB) { }
+    : fParent(that.fParent), fR(that.fR), fG(that.fG), fB(that.fB) { }
 
     ~SkTMaskPreBlend() { }
 
@@ -205,7 +205,7 @@ template <int R_LUM_BITS, int G_LUM_BITS, int B_LUM_BITS>
 SkTMaskPreBlend<R_LUM_BITS, G_LUM_BITS, B_LUM_BITS>
 SkTMaskGamma<R_LUM_BITS, G_LUM_BITS, B_LUM_BITS>::preBlend(SkColor color) const {
     return fIsLinear ? SkTMaskPreBlend<R_LUM_BITS, G_LUM_BITS, B_LUM_BITS>()
-                     : SkTMaskPreBlend<R_LUM_BITS, G_LUM_BITS, B_LUM_BITS>(this,
+                     : SkTMaskPreBlend<R_LUM_BITS, G_LUM_BITS, B_LUM_BITS>(sk_ref_sp(this),
                          fGammaTables[SkColorGetR(color) >> (8 - MAX_LUM_BITS)],
                          fGammaTables[SkColorGetG(color) >> (8 - MAX_LUM_BITS)],
                          fGammaTables[SkColorGetB(color) >> (8 - MAX_LUM_BITS)]);