remove separate color from coverage

src/gpu/GrDrawState.h

Index: src/gpu/GrDrawState.h
diff --git a/src/gpu/GrDrawState.h b/src/gpu/GrDrawState.h
index 97516e80432190adc444b68cf306e55ae5a68933..e731911016879d2450aa75c1d35eddd4f7e55aa4 100644
--- a/src/gpu/GrDrawState.h
+++ b/src/gpu/GrDrawState.h
@@ -249,9 +249,9 @@ public:
 
     int numColorStages() const { return fColorStages.count(); }
     int numCoverageStages() const { return fCoverageStages.count(); }
+    int numFragmentStages() const { return this->numColorStages() + this->numCoverageStages(); }
     int numTotalStages() const {
-         return this->numColorStages() + this->numCoverageStages() +
-                 (this->hasGeometryProcessor() ? 1 : 0);
+         return this->numFragmentStages() + (this->hasGeometryProcessor() ? 1 : 0);
     }
 
     bool hasGeometryProcessor() const { return SkToBool(fGeometryProcessor.get()); }