Fix caching of HLSL in D3D backend

We were always tagging the stored shaders as SkSL, so they (naturally)
didn't compile when we loaded them.

Change-Id: I96062808751b6233c9e90b29150f66270d0dd198
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/296836
Commit-Queue: Brian Osman <brianosman@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
Auto-Submit: Brian Osman <brianosman@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>

Author: brianosman

src/gpu/d3d/GrD3DPipelineStateBuilder.cpp

@@ -628,7 +628,7 @@ sk_sp<GrD3DPipelineState> GrD3DPipelineStateBuilder::finalize() {
             sk_sp<SkData> key =
                     SkData::MakeWithoutCopy(this->desc().asKey(), this->desc().initialKeyLength());
             sk_sp<SkData> data = GrPersistentCacheUtils::PackCachedShaders(
-                    cacheSkSL ? kSKSL_Tag : kSKSL_Tag, hlsl, inputs, kGrShaderTypeCount);
+                    cacheSkSL ? kSKSL_Tag : kHLSL_Tag, hlsl, inputs, kGrShaderTypeCount);
             persistentCache->store(*key, *data);
         }
     }