Handle static/single frame images in SkAnimCodecPlayer

Bug: skia:
Change-Id: I9fae9b56133e7de877021e846dbc431c69477113
Reviewed-on: https://skia-review.googlesource.com/c/168900
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
diff --git a/src/codec/SkCodecImageGenerator.h b/src/codec/SkCodecImageGenerator.h
index de6cf93..afd0b99 100644
--- a/src/codec/SkCodecImageGenerator.h
+++ b/src/codec/SkCodecImageGenerator.h
@@ -19,6 +19,8 @@
      */
     static std::unique_ptr<SkImageGenerator> MakeFromEncodedCodec(sk_sp<SkData>);
 
+    static std::unique_ptr<SkImageGenerator> MakeFromCodec(std::unique_ptr<SkCodec>);
+
 protected:
     sk_sp<SkData> onRefEncodedData() override;