DM: excercise other SkPDF raster dpis

Change-Id: Ia50661a8391da526d509adbe2d7203866c140b1c
Reviewed-on: https://skia-review.googlesource.com/25321
Reviewed-by: Mike Klein <mtklein@chromium.org>
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
diff --git a/dm/DMSrcSink.h b/dm/DMSrcSink.h
index f2e4ac2..a4c3c48 100644
--- a/dm/DMSrcSink.h
+++ b/dm/DMSrcSink.h
@@ -330,11 +330,12 @@
 
 class PDFSink : public Sink {
 public:
-    PDFSink(bool pdfa = false) : fPDFA(pdfa) {}
+    PDFSink(bool pdfa, SkScalar rasterDpi) : fPDFA(pdfa), fRasterDpi(rasterDpi) {}
     Error draw(const Src&, SkBitmap*, SkWStream*, SkString*) const override;
     const char* fileExtension() const override { return "pdf"; }
     SinkFlags flags() const override { return SinkFlags{ SinkFlags::kVector, SinkFlags::kDirect }; }
     bool fPDFA;
+    SkScalar fRasterDpi;
 };
 
 class XPSSink : public Sink {