Revert of Attach GrOptDrawState into shader building pipeline

src/gpu/GrRODrawState.cpp

Index: src/gpu/GrRODrawState.cpp
diff --git a/src/gpu/GrRODrawState.cpp b/src/gpu/GrRODrawState.cpp
index e522008cae4ab7c256b602d75330dde1bc0b6ac5..f7e486f925983522c936d5dc6f96bdf3245dd69f 100644
--- a/src/gpu/GrRODrawState.cpp
+++ b/src/gpu/GrRODrawState.cpp
@@ -184,6 +184,26 @@
         dstCoeff = &bogusDstCoeff;
     }
 
+    if (forceCoverage) {
+        return this->calcBlendOpts(true, srcCoeff, dstCoeff);
+    }
+
+    if (0 == (fBlendOptFlags & kInvalid_BlendOptFlag)) {
+        *srcCoeff = fOptSrcBlend;
+        *dstCoeff = fOptDstBlend;
+        return fBlendOptFlags;
+    }
+
+    fBlendOptFlags = this->calcBlendOpts(forceCoverage, srcCoeff, dstCoeff);
+    fOptSrcBlend = *srcCoeff;
+    fOptDstBlend = *dstCoeff;
+
+    return fBlendOptFlags;
+}
+
+GrRODrawState::BlendOptFlags GrRODrawState::calcBlendOpts(bool forceCoverage,
+                                                          GrBlendCoeff* srcCoeff,
+                                                          GrBlendCoeff* dstCoeff) const {
     *srcCoeff = this->getSrcBlendCoeff();
     *dstCoeff = this->getDstBlendCoeff();
 
@@ -352,3 +372,13 @@
     return (kA_GrColorComponentFlag & validComponentFlags) && 0xFF == GrColorUnpackA(color);
 }
 
+////////////////////////////////////////////////////////////////////////////////
+
+bool GrRODrawState::canIgnoreColorAttribute() const {
+    if (fBlendOptFlags & kInvalid_BlendOptFlag) {
+        this->getBlendOpts();
+    }
+    return SkToBool(fBlendOptFlags & (GrRODrawState::kEmitTransBlack_BlendOptFlag |
+                                      GrRODrawState::kEmitCoverage_BlendOptFlag));
+}
+