Make GrColorSpaceInfo store GrColorType.

This is largely redundant with GrPixelConfig. However, we intend to
remove GrPixelConfig.

Bug: skia:7580

Change-Id: I03d92303be832711f7821f8a97d36387c9b04a9f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/222883
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
diff --git a/src/gpu/GrBlurUtils.cpp b/src/gpu/GrBlurUtils.cpp
index 1a97888..0cc44b2 100644
--- a/src/gpu/GrBlurUtils.cpp
+++ b/src/gpu/GrBlurUtils.cpp
@@ -178,10 +178,10 @@
     GrBackendFormat format =
             context->priv().caps()->getBackendFormatFromColorType(kAlpha_8_SkColorType);
     sk_sp<GrRenderTargetContext> rtContext(
-        context->priv().makeDeferredRenderTargetContextWithFallback(
-            format, SkBackingFit::kApprox, maskRect.width(), maskRect.height(),
-            kAlpha_8_GrPixelConfig, nullptr, sampleCnt, GrMipMapped::kNo,
-            kTopLeft_GrSurfaceOrigin));
+            context->priv().makeDeferredRenderTargetContextWithFallback(
+                    format, SkBackingFit::kApprox, maskRect.width(), maskRect.height(),
+                    kAlpha_8_GrPixelConfig, GrColorType::kAlpha_8, nullptr, sampleCnt,
+                    GrMipMapped::kNo, kTopLeft_GrSurfaceOrigin));
     if (!rtContext) {
         return nullptr;
     }