Add reallyHasAlpha() to SkAndroidCodec

src/codec/SkSampledCodec.h

Index: src/codec/SkSampledCodec.h
diff --git a/src/codec/SkSampledCodec.h b/src/codec/SkSampledCodec.h
index b3a59126d26c003997cb6426959e49a54e1098f0..35e4f571d0d1aee61c9c9671a8d8e28a6655d3b7 100644
--- a/src/codec/SkSampledCodec.h
+++ b/src/codec/SkSampledCodec.h
@@ -23,8 +23,6 @@ public:
 
 protected:
 
-    SkEncodedFormat onGetEncodedFormat() const override { return fCodec->getEncodedFormat(); };
-
     SkISize onGetSampledDimensions(int sampleSize) const override;
 
     bool onGetSupportedSubset(SkIRect* desiredSubset) const override { return true; }
@@ -57,8 +55,6 @@ private:
     SkCodec::Result sampledDecode(const SkImageInfo& info, void* pixels, size_t rowBytes,
             const AndroidOptions& options);
 
-    SkAutoTDelete<SkCodec> fCodec;
-
     typedef SkAndroidCodec INHERITED;
 };
 #endif // SkSampledCodec_DEFINED