Use static XPF for porter duff xp factories.
BUG=skia:
Review URL: https://codereview.chromium.org/776843004
diff --git a/src/gpu/GrDrawState.cpp b/src/gpu/GrDrawState.cpp
index 0fd0987..db70bfa 100644
--- a/src/gpu/GrDrawState.cpp
+++ b/src/gpu/GrDrawState.cpp
@@ -116,8 +116,7 @@
fRenderTarget.reset(NULL);
fGeometryProcessor.reset(NULL);
- fXPFactory.reset(GrPorterDuffXPFactory::Create(kOne_GrBlendCoeff,
- kZero_GrBlendCoeff));
+ fXPFactory.reset(GrPorterDuffXPFactory::Create(SkXfermode::kSrc_Mode));
fColorStages.reset();
fCoverageStages.reset();