Update XPF invariant info to not account for conflation

src/effects/SkArithmeticMode_gpu.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 "SkArithmeticMode_gpu.h"
 
 #if SK_SUPPORT_GPU
@@ skipping 288 matching lines @@
 GrXferProcessor*
 GrArithmeticXPFactory::onCreateXferProcessor(const GrCaps& caps,
                                              const GrProcOptInfo& colorPOI,
                                              const GrProcOptInfo& coveragePOI,
                                              const DstTexture* dstTexture) const {
     return ArithmeticXP::Create(fK1, fK2, fK3, fK4, fEnforcePMColor, dstTexture,
                                 this->willReadDstColor(caps, colorPOI, coveragePOI));
 }
 
 
-void GrArithmeticXPFactory::getInvariantOutput(const GrProcOptInfo& colorPOI,
-                                               const GrProcOptInfo& coveragePOI,
-                                               GrXPFactory::InvariantOutput* output) const {
-    output->fWillBlendWithDst = true;
+void GrArithmeticXPFactory::getInvariantBlendedColor(const GrProcOptInfo& /*colorPOI*/,
+                                                     const GrProcOptInfo& /*coveragePOI*/,
+                                                     InvariantBlendedColor* blendedColor) const {
+    blendedColor->fWillBlendWithDst = true;
 
-    // TODO: We could try to optimize this more. For example if we have solid coverage and fK1 and
-    // fK3 are zero, then we won't be blending the color with dst at all so we can know what the
-    // output color is (up to the valid color components passed in).
-    output->fBlendedColorFlags = 0;
+    // TODO: We could try to optimize this more. For example if fK1 and fK3 are zero, then we won't
+    // be blending the color with dst at all so we can know what the output color is (up to the
+    // valid color components passed in).
+    blendedColor->fKnownColorFlags = kNone_GrColorComponentFlags;
 }
 
 GR_DEFINE_XP_FACTORY_TEST(GrArithmeticXPFactory);
 
 GrXPFactory* GrArithmeticXPFactory::TestCreate(SkRandom* random,
                                                GrContext*,
                                                const GrCaps&,
                                                GrTexture*[]) {
     float k1 = random->nextF();
     float k2 = random->nextF();
     float k3 = random->nextF();
     float k4 = random->nextF();
     bool enforcePMColor = random->nextBool();
 
     return GrArithmeticXPFactory::Create(k1, k2, k3, k4, enforcePMColor);
 }
 
 #endif