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/utils/SkCanvasStateUtils.cpp b/src/utils/SkCanvasStateUtils.cpp
index 3426126..062dc13 100644
--- a/src/utils/SkCanvasStateUtils.cpp
+++ b/src/utils/SkCanvasStateUtils.cpp
@@ -304,7 +304,7 @@
     SkASSERT(!bitmap.empty());
     SkASSERT(!bitmap.isNull());
 
-    SkAutoTUnref<SkCanvas> canvas(new SkCanvas(bitmap));
+    sk_sp<SkCanvas> canvas(new SkCanvas(bitmap));
 
     // setup the matrix and clip
     setup_canvas_from_MC_state(layerState.mcState, canvas.get());
@@ -323,14 +323,14 @@
         return nullptr;
     }
 
-    SkAutoTUnref<SkCanvasStack> canvas(new SkCanvasStack(state->width, state->height));
+    sk_sp<SkCanvasStack> canvas(new SkCanvasStack(state->width, state->height));
 
     // setup the matrix and clip on the n-way canvas
-    setup_canvas_from_MC_state(state_v1->mcState, canvas);
+    setup_canvas_from_MC_state(state_v1->mcState, canvas.get());
 
     // Iterate over the layers and add them to the n-way canvas
     for (int i = state_v1->layerCount - 1; i >= 0; --i) {
-        SkAutoTUnref<SkCanvas> canvasLayer(create_canvas_from_canvas_layer(state_v1->layers[i]));
+        sk_sp<SkCanvas> canvasLayer(create_canvas_from_canvas_layer(state_v1->layers[i]));
         if (!canvasLayer.get()) {
             return nullptr;
         }