Rename GrSwizzle to skgpu::Swizzle

Bug: skia:12845
Change-Id: Ia03293c4efdad4c5381a713c9d7d4857b79530c7
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/509398
Reviewed-by: Robert Phillips <robertphillips@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Jim Van Verth <jvanverth@google.com>
diff --git a/tests/OpChainTest.cpp b/tests/OpChainTest.cpp
index a7b0db7..521f13f 100644
--- a/tests/OpChainTest.cpp
+++ b/tests/OpChainTest.cpp
@@ -187,7 +187,7 @@
     SkASSERT(proxy);
     proxy->instantiate(dContext->priv().resourceProvider());
 
-    GrSwizzle writeSwizzle = caps->getWriteSwizzle(format, GrColorType::kRGBA_8888);
+    skgpu::Swizzle writeSwizzle = caps->getWriteSwizzle(format, GrColorType::kRGBA_8888);
 
     int result[result_width()];
     int validResult[result_width()];