Support Float32 output from SkColorSpaceXform

src/codec/SkWebpCodec.cpp

Index: src/codec/SkWebpCodec.cpp
diff --git a/src/codec/SkWebpCodec.cpp b/src/codec/SkWebpCodec.cpp
index e8b27b2178fa98b76fa7afd6cf629e1366171632..86bda576e4b2d6801e5834d17108313eac1dd455 100644
--- a/src/codec/SkWebpCodec.cpp
+++ b/src/codec/SkWebpCodec.cpp
@@ -307,13 +307,14 @@ SkCodec::Result SkWebpCodec::onGetPixels(const SkImageInfo& dstInfo, void* dst,
     }
 
     if (colorXform) {
-        SkAlphaType xformAlphaType = select_alpha_xform(dstInfo.alphaType(),
+        SkColorSpaceXform::ColorFormat colorFormat = select_xform_format(dstInfo.colorType());
+        SkAlphaType xformAlphaType = select_xform_alpha(dstInfo.alphaType(),
                                                         this->getInfo().alphaType());
 
         uint32_t* src = (uint32_t*) config.output.u.RGBA.rgba;
         size_t srcRowBytes = config.output.u.RGBA.stride;
         for (int y = 0; y < rowsDecoded; y++) {
-            colorXform->apply(dst, src, dstInfo.width(), dstInfo.colorType(), xformAlphaType);
+            colorXform->apply(dst, src, dstInfo.width(), colorFormat, xformAlphaType);
             dst = SkTAddOffset<void>(dst, rowBytes);
             src = SkTAddOffset<uint32_t>(src, srcRowBytes);
         }