Add pixel geometry and dft selection to viewer app.

Change-Id: I2fea84793383c44b102fa97b23f59235ef302ff9
Reviewed-on: https://skia-review.googlesource.com/121581
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Herb Derby <herb@google.com>
diff --git a/tools/viewer/Viewer.h b/tools/viewer/Viewer.h
index 8a1e227..2a8f12b 100644
--- a/tools/viewer/Viewer.h
+++ b/tools/viewer/Viewer.h
@@ -165,6 +165,7 @@
 
     SkPaint fPaint;
     SkPaintFields fPaintOverrides;
+    bool fPixelGeometryOverrides = false;
 };