s/SkAutoTUnref/sk_sp/ in src/ part 1

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4480

Change-Id: I7d3219b02ad5094785e1b7635a9482e69aadbc8c
Reviewed-on: https://skia-review.googlesource.com/4480
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
diff --git a/src/svg/SkSVGCanvas.cpp b/src/svg/SkSVGCanvas.cpp
index b6634b8..d3511c0 100644
--- a/src/svg/SkSVGCanvas.cpp
+++ b/src/svg/SkSVGCanvas.cpp
@@ -11,7 +11,7 @@
 SkCanvas* SkSVGCanvas::Create(const SkRect& bounds, SkXMLWriter* writer) {
     // TODO: pass full bounds to the device
     SkISize size = bounds.roundOut().size();
-    SkAutoTUnref<SkBaseDevice> device(SkSVGDevice::Create(size, writer));
+    sk_sp<SkBaseDevice> device(SkSVGDevice::Create(size, writer));
 
-    return new SkCanvas(device);
+    return new SkCanvas(device.get());
 }