Add F16, SkColorSpaceXform support to SkBmpCodec

BUG=skia:4895

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4390

Change-Id: I9cb727e7f13816b0ac882f62ec635a4528c3a524
Reviewed-on: https://skia-review.googlesource.com/4390
Reviewed-by: Matt Sarett <msarett@google.com>
Commit-Queue: Matt Sarett <msarett@google.com>
diff --git a/src/codec/SkBmpStandardCodec.h b/src/codec/SkBmpStandardCodec.h
index 20665db..64c4635 100644
--- a/src/codec/SkBmpStandardCodec.h
+++ b/src/codec/SkBmpStandardCodec.h
@@ -52,7 +52,7 @@
         return fInIco;
     }
 
-    SkCodec::Result prepareToDecode(const SkImageInfo& dstInfo,
+    SkCodec::Result onPrepareToDecode(const SkImageInfo& dstInfo,
             const SkCodec::Options& options, SkPMColor inputColorPtr[],
             int* inputColorCount) override;