Use samplingoptions for bitmap shader

Change-Id: I64c67ddcac29b68cdd0d25e4af4153358939b0ee
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/343736
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
diff --git a/samplecode/SamplePatch.cpp b/samplecode/SamplePatch.cpp
index fb4caa4..cca913d 100644
--- a/samplecode/SamplePatch.cpp
+++ b/samplecode/SamplePatch.cpp
@@ -34,7 +34,8 @@
     SkBitmap bm;
     decode_file(GetResourceAsData("images/dog.jpg"), &bm);
     *size = SkIPoint{bm.width(), bm.height()};
-    return bm.makeShader();
+    return bm.makeShader(SkSamplingOptions(SkFilterMode::kLinear,
+                                           SkMipmapMode::kNone));
 }
 
 static sk_sp<SkShader> make_shader1(const SkIPoint& size) {
@@ -241,7 +242,6 @@
 
         SkPaint paint;
         paint.setDither(true);
-        paint.setFilterQuality(kLow_SkFilterQuality);
 
         canvas->translate(DX, DY);