Rename GrCaps textureSwizzle to readSwizzle.

Change-Id: Ia5e2c4d3ca7346a1ad7559cd158ed632a70145bc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/260699
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
diff --git a/src/gpu/ops/GrShadowRRectOp.cpp b/src/gpu/ops/GrShadowRRectOp.cpp
index 1e07a81..f67f5b6 100644
--- a/src/gpu/ops/GrShadowRRectOp.cpp
+++ b/src/gpu/ops/GrShadowRRectOp.cpp
@@ -691,7 +691,7 @@
     if (!falloffTexture) {
         return nullptr;
     }
-    GrSwizzle swizzle = context->priv().caps()->getTextureSwizzle(falloffTexture->backendFormat(),
+    GrSwizzle swizzle = context->priv().caps()->getReadSwizzle(falloffTexture->backendFormat(),
                                                                   GrColorType::kAlpha_8);
 
     GrSurfaceProxyView falloffView(std::move(falloffTexture), kTopLeft_GrSurfaceOrigin, swizzle);