DM::NullSink

dm/DMSrcSink.h

Index: dm/DMSrcSink.h
diff --git a/dm/DMSrcSink.h b/dm/DMSrcSink.h
index e163a24253f88e4ed58b2ca956588b0b16c96c24..67c8e5cf4f1aad7098027cb9fc3c20e77daf46b0 100644
--- a/dm/DMSrcSink.h
+++ b/dm/DMSrcSink.h
@@ -8,6 +8,7 @@
 #include "SkCanvas.h"
 #include "SkData.h"
 #include "SkGPipe.h"
+#include "SkNullCanvas.h"
 #include "SkPicture.h"
 #include "gm.h"
 
@@ -175,6 +176,15 @@ private:
     SkAutoTDelete<Sink>         fSink;
 };
 
+class NullSink : public Sink {
+public:
+    Error draw(const Src& src, SkBitmap*, SkWStream* out) const SK_OVERRIDE {
+        return src.draw(SkCreateNullCanvas());
+    }
+    int enclave() const SK_OVERRIDE { return kAnyThread_Enclave; }
+    const char* fileExtension() const SK_OVERRIDE { return ""; }
+};
+
 }  // namespace DM
 
 #endif//DMSrcSink_DEFINED