Move willColorBlendWithDst from pipeline builder to GrPipelineOptimizations.

src/gpu/GrPipeline.cpp

Index: src/gpu/GrPipeline.cpp
diff --git a/src/gpu/GrPipeline.cpp b/src/gpu/GrPipeline.cpp
index bc3e785ba138a4d94cd301384c53e6e4bb9ba336..1fabddafe19096544408329caf8393cf304fda5a 100644
--- a/src/gpu/GrPipeline.cpp
+++ b/src/gpu/GrPipeline.cpp
@@ -120,6 +120,13 @@ GrPipeline* GrPipeline::CreateAt(void* memory, const CreateArgs& args,
     if (SkToBool(optFlags & GrXferProcessor::kCanTweakAlphaForCoverage_OptFlag)) {
         opts->fFlags |= GrPipelineOptimizations::kCanTweakAlphaForCoverage_Flag; 
     }
+
+    GrXPFactory::InvariantBlendedColor blendedColor;
+    builder.fXPFactory->getInvariantBlendedColor(args.fColorPOI, &blendedColor);
+    if (blendedColor.fWillBlendWithDst) {
+        opts->fFlags |= GrPipelineOptimizations::kWillColorBlendWithDst_Flag;
+    }
+
     return pipeline;
 }