remove SkGPipe

dm/DMSrcSink.h

Index: dm/DMSrcSink.h
diff --git a/dm/DMSrcSink.h b/dm/DMSrcSink.h
index 5e053b1155cfd57106bbc96e665bb53c8d3d720a..4251808d6d0290bfa0f1eb65a44d4ed18de3df89 100644
--- a/dm/DMSrcSink.h
+++ b/dm/DMSrcSink.h
@@ -15,7 +15,6 @@
 #include "SkBitmapRegionDecoder.h"
 #include "SkCanvas.h"
 #include "SkData.h"
-#include "SkGPipe.h"
 #include "SkPicture.h"
 #include "gm.h"
 
@@ -316,12 +315,6 @@ private:
     const SkMatrix fMatrix;
 };
 
-class ViaPipe : public Via {
-public:
-    explicit ViaPipe(Sink* sink) : Via(sink) {}
-    Error draw(const Src&, SkBitmap*, SkWStream*, SkString*) const override;
-};
-
 class ViaRemote : public Via {
 public:
     ViaRemote(bool cache, Sink* sink) : Via(sink), fCache(cache) {}