Fix for recent SrcOver XP Change

src/gpu/GrTextureParamsAdjuster.cpp

Index: src/gpu/GrTextureParamsAdjuster.cpp
diff --git a/src/gpu/GrTextureParamsAdjuster.cpp b/src/gpu/GrTextureParamsAdjuster.cpp
index 1a751ab73c7a6f51be05d98b4f838e0c081aa02d..09285579c16a90ed7770836c6fb999a84bbff74f 100644
--- a/src/gpu/GrTextureParamsAdjuster.cpp
+++ b/src/gpu/GrTextureParamsAdjuster.cpp
@@ -97,6 +97,7 @@ static GrTexture* copy_on_gpu(GrTexture* inputTexture, const SkIRect* subset,
         GrTextureParams params(SkShader::kClamp_TileMode, copyParams.fFilter);
         paint.addColorTextureProcessor(inputTexture, SkMatrix::I(), params);
     }
+    paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);
 
     SkRect localRect;
     if (subset) {