Remove SkAutoTUnref and SkAutoTDelete from public includes.

src/core/SkWriteBuffer.cpp

Index: src/core/SkWriteBuffer.cpp
diff --git a/src/core/SkWriteBuffer.cpp b/src/core/SkWriteBuffer.cpp
index 019bc247b59819aee3a4abad26f0a7625c0635b1..3d12889fa19284ebcf466751d40c4262605b9e59 100644
--- a/src/core/SkWriteBuffer.cpp
+++ b/src/core/SkWriteBuffer.cpp
@@ -236,11 +236,8 @@ SkRefCntSet* SkBinaryWriteBuffer::setTypefaceRecorder(SkRefCntSet* rec) {
     return rec;
 }
 
-void SkBinaryWriteBuffer::setPixelSerializer(SkPixelSerializer* serializer) {
-    fPixelSerializer.reset(serializer);
-    if (serializer) {
-        serializer->ref();
-    }
+void SkBinaryWriteBuffer::setPixelSerializer(sk_sp<SkPixelSerializer> serializer) {
+    fPixelSerializer = std::move(serializer);
 }
 
 void SkBinaryWriteBuffer::writeFlattenable(const SkFlattenable* flattenable) {