Cleanup use of legacy SkSurface creation methods a bit

platform_tools/android/apps/canvasproof/src/main/jni/org_skia_canvasproof_GaneshPictureRenderer.cpp

Index: platform_tools/android/apps/canvasproof/src/main/jni/org_skia_canvasproof_GaneshPictureRenderer.cpp
diff --git a/platform_tools/android/apps/canvasproof/src/main/jni/org_skia_canvasproof_GaneshPictureRenderer.cpp b/platform_tools/android/apps/canvasproof/src/main/jni/org_skia_canvasproof_GaneshPictureRenderer.cpp
index d1de529674104e39e6853e53c9d50c6e50e2ac84..de38919fe5d313c2ecc7eca0d5c662d6eecff344 100644
--- a/platform_tools/android/apps/canvasproof/src/main/jni/org_skia_canvasproof_GaneshPictureRenderer.cpp
+++ b/platform_tools/android/apps/canvasproof/src/main/jni/org_skia_canvasproof_GaneshPictureRenderer.cpp
@@ -37,9 +37,8 @@ static void render_picture(GrContext* grContext,
     SkSurfaceProps surfaceProps(SkSurfaceProps::kUseDeviceIndependentFonts_Flag,
                                 kUnknown_SkPixelGeometry);
     // TODO:  Check to see if we can keep the surface between draw calls.
-    SkAutoTUnref<SkSurface> surface(
-            SkSurface::NewFromBackendRenderTarget(
-                    grContext, desc, &surfaceProps));
+    sk_sp<SkSurface> surface(
+            SkSurface::MakeFromBackendRenderTarget(grContext, desc, nullptr, &surfaceProps));
     if (surface) {
         SkCanvas* canvas = surface->getCanvas();
         SkASSERT(canvas);