Fill incomplete images in SkCodec parent class

src/codec/SkWebpCodec.h

Index: src/codec/SkWebpCodec.h
diff --git a/src/codec/SkWebpCodec.h b/src/codec/SkWebpCodec.h
index d60acede7bdb4282ed4d3af5f78be44d25042364..934dc3a2731ae08f4743e5287b1441121b5796e9 100644
--- a/src/codec/SkWebpCodec.h
+++ b/src/codec/SkWebpCodec.h
@@ -21,7 +21,7 @@ public:
     static SkCodec* NewFromStream(SkStream*);
     static bool IsWebp(SkStream*);
 protected:
-    Result onGetPixels(const SkImageInfo&, void*, size_t, const Options&, SkPMColor*, int*)
+    Result onGetPixels(const SkImageInfo&, void*, size_t, const Options&, SkPMColor*, int*, int*)
             override;
     SkEncodedFormat onGetEncodedFormat() const override { return kWEBP_SkEncodedFormat; }
 
@@ -34,9 +34,16 @@ protected:
     bool onDimensionsSupported(const SkISize&) override;
 
     bool onGetValidSubset(SkIRect* /* desiredSubset */) const override;
+
+    SkSampler* getSampler() override;
 private:
     SkWebpCodec(const SkImageInfo&, SkStream*);
 
+    SkAutoTDelete<SkSampler> fSampler;

[scroggo, 2015/10/07 16:04:24]

I don't understand why webp ever needs a sampler. Sampling is only supported
during scanline decode, which this class does not support, right?

[msarett, 2015/10/07 17:40:41]

Removed in Patch Set 11.

+     // Dummy webp sampler needs to know the destination width.
+    int fDstWidth;
+    friend class SkWebpSampler;
+
     typedef SkCodec INHERITED;
 };
 #endif // SkWebpCodec_DEFINED