Implement Fill() for incomplete decodes to RGBA_F16

src/codec/SkMaskSwizzler.h

Index: src/codec/SkMaskSwizzler.h
diff --git a/src/codec/SkMaskSwizzler.h b/src/codec/SkMaskSwizzler.h
index 1dc1918f494846ab63448a78f20434bc6d41d3c8..3bf8d1758f3453d3df98f5b4ea8d360adf47f9e9 100644
--- a/src/codec/SkMaskSwizzler.h
+++ b/src/codec/SkMaskSwizzler.h
@@ -39,7 +39,7 @@ public:
     /**
      * Implement fill using a custom width.
      */
-    void fill(const SkImageInfo& info, void* dst, size_t rowBytes, uint32_t colorOrIndex,
+    void fill(const SkImageInfo& info, void* dst, size_t rowBytes, uint64_t colorOrIndex,
             SkCodec::ZeroInitialized zeroInit) override {
         const SkImageInfo fillInfo = info.makeWH(fDstWidth, info.height());
         SkSampler::Fill(fillInfo, dst, rowBytes, colorOrIndex, zeroInit);