Add SkEncodedInfo to report properties of encoded image data

src/codec/SkPngCodec.h

Index: src/codec/SkPngCodec.h
diff --git a/src/codec/SkPngCodec.h b/src/codec/SkPngCodec.h
index 5673e5b4fac734891a690f145bac373c35abe267..8587bf8a14f781e911b85557637f5600b3256eee 100644
--- a/src/codec/SkPngCodec.h
+++ b/src/codec/SkPngCodec.h
@@ -41,8 +41,8 @@ protected:
         return fSwizzler;
     }
 
-    SkPngCodec(const SkImageInfo&, SkStream*, SkPngChunkReader*, png_structp, png_infop, int, int,
-               sk_sp<SkColorSpace>);
+    SkPngCodec(int width, int height, const SkEncodedInfo&, SkStream*, SkPngChunkReader*,
+            png_structp, png_infop, int, int, sk_sp<SkColorSpace>);
 
     png_structp png_ptr() { return fPng_ptr; }
     SkSwizzler* swizzler() { return fSwizzler; }