Make sp variants for SkData

src/core/SkPicturePlayback.cpp

Index: src/core/SkPicturePlayback.cpp
diff --git a/src/core/SkPicturePlayback.cpp b/src/core/SkPicturePlayback.cpp
index e8497daca1c975bb3da748e950a9915047cc21bd..ae3c3f20afadddd13dd46c4e038ba6071e80d393 100644
--- a/src/core/SkPicturePlayback.cpp
+++ b/src/core/SkPicturePlayback.cpp
@@ -178,8 +178,7 @@ void SkPicturePlayback::handleOp(SkReader32* reader,
         case DRAW_ANNOTATION: {
             const SkRect& rect = reader->skipT<SkRect>();
             const char* key = reader->readString();
-            SkAutoTUnref<SkData> value(reader->readData());
-            canvas->drawAnnotation(rect, key, value);
+            canvas->drawAnnotation(rect, key, reader->readData().get());
         } break;
         case DRAW_ATLAS: {
             const SkPaint* paint = fPictureData->getPaint(reader);