New API for computing optimization invariants.

src/gpu/batches/GrDrawVerticesBatch.cpp

Index: src/gpu/batches/GrDrawVerticesBatch.cpp
diff --git a/src/gpu/batches/GrDrawVerticesBatch.cpp b/src/gpu/batches/GrDrawVerticesBatch.cpp
index 16c70e8513a0c49f837d532ce92cde132eb91c6b..563cfe2e150fb02e49a23b9d3e43f83e615e2ede 100644
--- a/src/gpu/batches/GrDrawVerticesBatch.cpp
+++ b/src/gpu/batches/GrDrawVerticesBatch.cpp
@@ -65,17 +65,17 @@ GrDrawVerticesBatch::GrDrawVerticesBatch(const Geometry& geometry, GrPrimitiveTy
     this->setBounds(bounds);
 }
 
-void GrDrawVerticesBatch::getInvariantOutputColor(GrInitInvariantOutput* out) const {
+void GrDrawVerticesBatch::computeBatchToXPOverrides(GrInitInvariantOutput* color, 
+                                                    GrInitInvariantOutput* coverage,
+                                                    bool* usePLSDstRead) const {
     // When this is called on a batch, there is only one geometry bundle
     if (fVariableColor) {
-        out->setUnknownFourComponents();
+        color->setUnknownFourComponents();
     } else {
-        out->setKnownFourComponents(fGeoData[0].fColor);
+        color->setKnownFourComponents(fGeoData[0].fColor);
     }
-}
-
-void GrDrawVerticesBatch::getInvariantOutputCoverage(GrInitInvariantOutput* out) const {
-    out->setKnownSingleComponent(0xff);
+    coverage->setKnownSingleComponent(0xff);
+    *usePLSDstRead = false;
 }
 
 void GrDrawVerticesBatch::initBatchTracker(const GrPipelineOptimizations& opt) {