hide legacy scalePixels and makeShader

Change-Id: Idae1e44aa0417adb943fd20112fb4f1fa81167f2
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/337719
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
diff --git a/docs/examples/Image_scalePixels.cpp b/docs/examples/Image_scalePixels.cpp
index 9a595ac..ab38ecd 100644
--- a/docs/examples/Image_scalePixels.cpp
+++ b/docs/examples/Image_scalePixels.cpp
@@ -15,7 +15,7 @@
     SkFilterQuality qualities[] = { kNone_SkFilterQuality, kLow_SkFilterQuality,
                      kMedium_SkFilterQuality, kHigh_SkFilterQuality };
     for (unsigned index = 0; index < SK_ARRAY_COUNT(qualities); ++index) {
-        image->scalePixels(pixmap, qualities[index]);
+        image->scalePixels(pixmap, SkSamplingOptions(qualities[index]));
         sk_sp<SkImage> filtered = SkImage::MakeFromRaster(pixmap, nullptr, nullptr);
         canvas->drawImage(filtered, 16 * index, 0);
     }
diff --git a/docs/examples/Pixmap_scalePixels.cpp b/docs/examples/Pixmap_scalePixels.cpp
index 22c5f4f..fa7ccf3 100644
--- a/docs/examples/Pixmap_scalePixels.cpp
+++ b/docs/examples/Pixmap_scalePixels.cpp
@@ -16,7 +16,8 @@
         std::vector<int32_t> dstPixels;
         dstPixels.resize(image->height() * rowBytes);
         SkPixmap dstmap(info, &dstPixels.front(), rowBytes);
-        pixmap.scalePixels(dstmap, kMedium_SkFilterQuality);
+        pixmap.scalePixels(dstmap, SkSamplingOptions(SkFilterMode::kLinear,
+                                                     SkMipmapMode::kNearest));
         SkBitmap bitmap;
         bitmap.installPixels(dstmap);
         canvas->translate(32, 32);