Move willColorBlendWithDst from pipeline builder to GrPipelineOptimizations.

src/gpu/GrPipeline.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrPipeline.h"
 
 #include "GrCaps.h"
@@ skipping 102 matching lines @@
     }
     if (!SkToBool(optFlags & GrXferProcessor::kIgnoreCoverage_OptFlag)) {
         opts->fFlags |= GrPipelineOptimizations::kReadsCoverage_Flag;
     }
     if (usesLocalCoords) {
         opts->fFlags |= GrPipelineOptimizations::kReadsLocalCoords_Flag;
     }
     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;
 }
 
 void GrPipeline::adjustProgramFromOptimizations(const GrPipelineBuilder& pipelineBuilder,
                                                 GrXferProcessor::OptFlags flags,
                                                 const GrProcOptInfo& colorPOI,
                                                 const GrProcOptInfo& coveragePOI,
                                                 int* firstColorStageIdx,
                                                 int* firstCoverageStageIdx) {
     fReadsFragPosition = fXferProcessor->willReadFragmentPosition();
@@ skipping 38 matching lines @@
 
     for (int i = 0; i < a.numFragmentStages(); i++) {
         if (!a.getFragmentStage(i).processor()->isEqual(*b.getFragmentStage(i).processor(),
                                                             ignoreCoordTransforms)) {
             return false;
         }
     }
     return true;
 }