Remove a usage of GrPixelConfig in SkGpuBlurUtils::GaussianBlur

Bug: skia:6718
Change-Id: Ia8a96cf6907ffaafd989f1e5bb1443d1ef51b9e6
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/242142
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
diff --git a/src/gpu/SkGpuDevice.cpp b/src/gpu/SkGpuDevice.cpp
index b77fe5b..0ef9383 100644
--- a/src/gpu/SkGpuDevice.cpp
+++ b/src/gpu/SkGpuDevice.cpp
@@ -1204,6 +1204,7 @@
                                                rect,
                                                bitmap.getGenerationID(),
                                                std::move(proxy),
+                                               SkColorTypeToGrColorType(bitmap.colorType()),
                                                bitmap.refColorSpace(),
                                                &this->surfaceProps());
 }
@@ -1217,6 +1218,7 @@
                                                    SkIRect::MakeWH(image->width(), image->height()),
                                                    image->uniqueID(),
                                                    std::move(proxy),
+                                                   SkColorTypeToGrColorType(image->colorType()),
                                                    image->refColorSpace(),
                                                    &this->surfaceProps());
     } else if (image->peekPixels(&pm)) {
@@ -1262,10 +1264,13 @@
         finalSubset = SkIRect::MakeSize(proxy->isize());
     }
 
+    GrColorType ct = SkColorTypeToGrColorType(this->imageInfo().colorType());
+
     return SkSpecialImage::MakeDeferredFromGpu(fContext.get(),
                                                finalSubset,
                                                kNeedNewImageUniqueID_SpecialImage,
                                                std::move(proxy),
+                                               ct,
                                                this->imageInfo().refColorSpace(),
                                                &this->surfaceProps());
 }