New API for computing optimization invariants.

src/gpu/batches/GrAAHairLinePathRenderer.cpp

Index: src/gpu/batches/GrAAHairLinePathRenderer.cpp
diff --git a/src/gpu/batches/GrAAHairLinePathRenderer.cpp b/src/gpu/batches/GrAAHairLinePathRenderer.cpp
index d17ed09da9deb43872f2a50902065964d74ea0a7..efffa988d3ee9e53230857c0974e070395ca88f5 100644
--- a/src/gpu/batches/GrAAHairLinePathRenderer.cpp
+++ b/src/gpu/batches/GrAAHairLinePathRenderer.cpp
@@ -686,12 +686,12 @@ public:
 
     const char* name() const override { return "AAHairlineBatch"; }
 
-    void getInvariantOutputColor(GrInitInvariantOutput* out) const override {
+    void computeBatchToXPOverrides(GrInitInvariantOutput* color, GrInitInvariantOutput* coverage,
+                                   bool* usePLSDstRead) const {
         // When this is called on a batch, there is only one geometry bundle
-        out->setKnownFourComponents(fGeoData[0].fColor);
-    }
-    void getInvariantOutputCoverage(GrInitInvariantOutput* out) const override {
-        out->setUnknownSingleComponent();
+        color->setKnownFourComponents(fGeoData[0].fColor);
+        coverage->setUnknownSingleComponent();
+        *usePLSDstRead = true;
     }
 
 private: