New API for computing optimization invariants.

src/gpu/GrPrimitiveProcessor.h

Index: src/gpu/GrPrimitiveProcessor.h
diff --git a/src/gpu/GrPrimitiveProcessor.h b/src/gpu/GrPrimitiveProcessor.h
index 46136f07663d111b1cefc32e3930db1384601677..467200a86d098316a9226c5c6dcc56db7e14426d 100644
--- a/src/gpu/GrPrimitiveProcessor.h
+++ b/src/gpu/GrPrimitiveProcessor.h
@@ -56,7 +56,7 @@ struct GrInitInvariantOutput;
  * computed optimizations. It is the batch-specific optimizations that allow the pipelines
  * to be equal.
  */
-class GrPipelineOptimizations {
+class GrXPOverridesForBatch {
 public:
     /** Does the pipeline require the GrPrimitiveProcessor's color? */
     bool readsColor() const { return SkToBool(kReadsColor_Flag & fFlags); }