Add subsetting to SkScaledCodec

bench/nanobench.cpp

Index: bench/nanobench.cpp
diff --git a/bench/nanobench.cpp b/bench/nanobench.cpp
index 900ba4dfa27724c6d312280f47c6356e9f4c523a..8d4f20730a477d6ad4e39417bdfce4c23e4bfcba 100644
--- a/bench/nanobench.cpp
+++ b/bench/nanobench.cpp
@@ -915,6 +915,7 @@ public:
         const SkBitmapRegionDecoderInterface::Strategy strategies[] = {
                 SkBitmapRegionDecoderInterface::kOriginal_Strategy,
                 SkBitmapRegionDecoderInterface::kCanvas_Strategy,
+                SkBitmapRegionDecoderInterface::kCodec_Strategy,
         };
 
         // We intend to create benchmarks that model the use cases in