Remove use of colorTypes from SkYUVSizeInfo

Bug: skia:7903
Change-Id: I7301d943b679a4670511b6cf60c594baf615834a
Reviewed-on: https://skia-review.googlesource.com/c/164261
Commit-Queue: Jim Van Verth <jvanverth@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
diff --git a/src/gpu/mtl/GrMtlCaps.h b/src/gpu/mtl/GrMtlCaps.h
index e72ea83..6de830d 100644
--- a/src/gpu/mtl/GrMtlCaps.h
+++ b/src/gpu/mtl/GrMtlCaps.h
@@ -80,6 +80,11 @@
         return false;
     }
 
+    bool getYUVAConfigFromBackendFormat(const GrBackendFormat&,
+                                        GrPixelConfig*) const override {
+        return false;
+    }
+
     bool performPartialClearsAsDraws() const override {
         return true;
     }