Use non-linear blending flag in raster pipeline blitter

BUG=skia:

Change-Id: I00b52e6de3b46b7d26c1df2aa63c521b6c7ece2d
Reviewed-on: https://skia-review.googlesource.com/8526
Commit-Queue: Matt Sarett <msarett@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Reed <reed@google.com>
diff --git a/src/core/SkCoreBlitters.h b/src/core/SkCoreBlitters.h
index e3256d4..85392dd 100644
--- a/src/core/SkCoreBlitters.h
+++ b/src/core/SkCoreBlitters.h
@@ -204,6 +204,6 @@
 
 // Returns nullptr if no SkRasterPipeline blitter can be constructed for this paint.
 SkBlitter* SkCreateRasterPipelineBlitter(const SkPixmap&, const SkPaint&, const SkMatrix& ctm,
-                                         SkArenaAlloc*, bool blendCorrectly);
+                                         SkArenaAlloc*);
 
 #endif