Rename GrDrawOp::xpRequiresDstTexture to finalize and change return type to an enum

Bug: skia:
Change-Id: I0f9d9d3ef1dd20821f171f7d6237491921fbbd97
Reviewed-on: https://skia-review.googlesource.com/20142
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
diff --git a/tests/GrMeshTest.cpp b/tests/GrMeshTest.cpp
index e4663e1..0e67acf 100644
--- a/tests/GrMeshTest.cpp
+++ b/tests/GrMeshTest.cpp
@@ -262,7 +262,9 @@
 private:
     const char* name() const override { return "GrMeshTestOp"; }
     FixedFunctionFlags fixedFunctionFlags() const override { return FixedFunctionFlags::kNone; }
-    bool xpRequiresDstTexture(const GrCaps&, const GrAppliedClip*) override { return false; }
+    RequiresDstTexture finalize(const GrCaps&, const GrAppliedClip*) override {
+        return RequiresDstTexture::kNo;
+    }
     bool onCombineIfPossible(GrOp* other, const GrCaps& caps) override { return false; }
     void onPrepare(GrOpFlushState*) override {}
     void onExecute(GrOpFlushState* state) override {