Cap filtering to kMedium_SkFilterQuality when downsampling

src/core/SkBitmapController.cpp

Index: src/core/SkBitmapController.cpp
diff --git a/src/core/SkBitmapController.cpp b/src/core/SkBitmapController.cpp
index 233e81146f0e308260b6584567ffb0148c3a9d9b..7182ea73829af66461d61c98dc75addb228777f0 100644
--- a/src/core/SkBitmapController.cpp
+++ b/src/core/SkBitmapController.cpp
@@ -100,6 +100,12 @@ bool SkDefaultBitmapControllerState::processHQRequest(const SkBitmapProvider& pr
     if (SkScalarNearlyEqual(invScaleX, 1) && SkScalarNearlyEqual(invScaleY, 1)) {
         return false; // no need for HQ
     }
+
+#ifndef SK_SUPPORT_LEGACY_HQ_DOWNSAMPLING
+    if (invScaleX > 1 || invScaleY > 1) {
+        return false; // only use HQ when upsampling
+    }
+#endif
     
     const int dstW = SkScalarRoundToScalar(provider.width() / invScaleX);
     const int dstH = SkScalarRoundToScalar(provider.height() / invScaleY);