New API for computing optimization invariants.

src/gpu/batches/GrAtlasTextBatch.cpp

Index: src/gpu/batches/GrAtlasTextBatch.cpp
diff --git a/src/gpu/batches/GrAtlasTextBatch.cpp b/src/gpu/batches/GrAtlasTextBatch.cpp
index 91088c0c59068811a94fea0a48c9ba6dca51d39a..2db83416095f5f9f60a1ff81d0616fe7361e98f3 100644
--- a/src/gpu/batches/GrAtlasTextBatch.cpp
+++ b/src/gpu/batches/GrAtlasTextBatch.cpp
@@ -43,27 +43,26 @@ SkString GrAtlasTextBatch::dumpInfo() const {
     return str;
 }
 
-void GrAtlasTextBatch::getInvariantOutputColor(GrInitInvariantOutput* out) const {
+void GrAtlasTextBatch::computeBatchToXPOverrides(GrInitInvariantOutput* color, 
+                                                 GrInitInvariantOutput* coverage,
+                                                 bool* usePLSDstRead) const {
     if (kColorBitmapMask_MaskType == fMaskType) {
-        out->setUnknownFourComponents();
+        color->setUnknownFourComponents();
     } else {
-        out->setKnownFourComponents(fBatch.fColor);
+        color->setKnownFourComponents(fBatch.fColor);
     }
-}
-
-void GrAtlasTextBatch::getInvariantOutputCoverage(GrInitInvariantOutput* out) const {
     switch (fMaskType) {
         case kGrayscaleDistanceField_MaskType:
         case kGrayscaleCoverageMask_MaskType:
-            out->setUnknownSingleComponent();
+            coverage->setUnknownSingleComponent();
             break;
         case kLCDCoverageMask_MaskType:
         case kLCDDistanceField_MaskType:
-            out->setUnknownOpaqueFourComponents();
-            out->setUsingLCDCoverage();
+            coverage->setUnknownOpaqueFourComponents();
+            coverage->setUsingLCDCoverage();
             break;
         case kColorBitmapMask_MaskType:
-            out->setKnownSingleComponent(0xff);
+            coverage->setKnownSingleComponent(0xff);
     }
 }