Update XPF invariant info to not account for conflation

src/gpu/effects/GrCustomXfermode.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 "effects/GrCustomXfermode.h"
 #include "effects/GrCustomXfermodePriv.h"
 
@@ skipping 789 matching lines @@
         // No hardware support for advanced blend equations; we will need to do it in the shader.
         return true;
     }
     if (coveragePOI.isFourChannelOutput()) {
         // Advanced blend equations can't tweak alpha for RGB coverage.
         return true;
     }
     return false;
 }
 
-void GrCustomXPFactory::getInvariantOutput(const GrProcOptInfo& colorPOI,
-                                               const GrProcOptInfo& coveragePOI,
-                                               GrXPFactory::InvariantOutput* output) const {
-    output->fWillBlendWithDst = true;
-    output->fBlendedColorFlags = 0;
+void GrCustomXPFactory::getInvariantBlendedColor(const GrProcOptInfo& colorPOI,
+                                                 InvariantBlendedColor* blendedColor) const {
+    blendedColor->fWillBlendWithDst = true;
+    blendedColor->fKnownColorFlags = kNone_GrColorComponentFlags;
 }
 
 GR_DEFINE_XP_FACTORY_TEST(GrCustomXPFactory);
 GrXPFactory* GrCustomXPFactory::TestCreate(SkRandom* rand,
                                            GrContext*,
                                            const GrCaps&,
                                            GrTexture*[]) {
     int mode = rand->nextRangeU(SkXfermode::kLastCoeffMode + 1, SkXfermode::kLastSeparableMode);
 
     return SkNEW_ARGS(GrCustomXPFactory, (static_cast<SkXfermode::Mode>(mode)));
 }