Switch to pixmap in API.

bench/SkLinearBitmapPipelineBench.cpp

Index: bench/SkLinearBitmapPipelineBench.cpp
diff --git a/bench/SkLinearBitmapPipelineBench.cpp b/bench/SkLinearBitmapPipelineBench.cpp
index cc5d0850e86161b9ac6109299db65f767180d821..354ccefafd0aca605587718194ded41a89df1320 100644
--- a/bench/SkLinearBitmapPipelineBench.cpp
+++ b/bench/SkLinearBitmapPipelineBench.cpp
@@ -141,8 +141,10 @@ struct SkBitmapFPGeneral final : public CommonBitmapFPBenchmark {
             filterQuality = SkFilterQuality::kNone_SkFilterQuality;
         }
 
+        SkPixmap srcPixmap{fInfo, fBitmap.get(), static_cast<size_t>(4 * width)};
+
         SkLinearBitmapPipeline pipeline{
-            fInvert, filterQuality, fXTile, fYTile, fInfo, fBitmap.get() };
+            fInvert, filterQuality, fXTile, fYTile, srcPixmap};
 
         int count = 100;