Revert of removing equality / compute invariant loops from GrGeometryProcessors

src/gpu/GrDefaultGeoProcFactory.h

Index: src/gpu/GrDefaultGeoProcFactory.h
diff --git a/src/gpu/GrDefaultGeoProcFactory.h b/src/gpu/GrDefaultGeoProcFactory.h
index aee16fd0270fee9723119180356b5efb8869c97b..91c6f5dda7dba3dab29c3cfa7612b68155639493 100644
--- a/src/gpu/GrDefaultGeoProcFactory.h
+++ b/src/gpu/GrDefaultGeoProcFactory.h
@@ -85,6 +85,7 @@
                                              GrColor,
                                              const SkMatrix& viewMatrix = SkMatrix::I(),
                                              const SkMatrix& localMatrix = SkMatrix::I(),
+                                             bool opaqueVertexColors = false,
                                              uint8_t coverage = 0xff);
 
     static size_t DefaultVertexStride() { return sizeof(PositionAttr); }