New API for computing optimization invariants.

src/gpu/batches/GrNinePatch.cpp

Index: src/gpu/batches/GrNinePatch.cpp
diff --git a/src/gpu/batches/GrNinePatch.cpp b/src/gpu/batches/GrNinePatch.cpp
index 999e1fd1562dbbeb54d42d5085e00f5a7211cee7..4b371b1a2544453ae9e7dc712ed1b21420956ea2 100644
--- a/src/gpu/batches/GrNinePatch.cpp
+++ b/src/gpu/batches/GrNinePatch.cpp
@@ -74,12 +74,11 @@ public:
         return str;
     }
 
-    void getInvariantOutputColor(GrInitInvariantOutput* out) const override {
-        out->setUnknownFourComponents();
-    }
-
-    void getInvariantOutputCoverage(GrInitInvariantOutput* out) const override {
-        out->setKnownSingleComponent(0xff);
+    void computeBatchToXPOverrides(GrInitInvariantOutput* color, GrInitInvariantOutput* coverage,
+                                   bool* usePLSDstRead) const {
+        color->setUnknownFourComponents();
+        coverage->setKnownSingleComponent(0xff);
+        *usePLSDstRead = false;
     }
 
     SkSTArray<1, Geometry, true>* geoData() { return &fGeoData; }