[skotty] Speculative g3 DM build fix

Disable Skotty support in G3 for now.

TBR=
Change-Id: Ic64f62bc21e9d4a531cdfa2495710edc1ba531f8
Reviewed-on: https://skia-review.googlesource.com/90029
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
diff --git a/dm/DM.cpp b/dm/DM.cpp
index 246615e..4728933 100644
--- a/dm/DM.cpp
+++ b/dm/DM.cpp
@@ -784,7 +784,9 @@
         gather_file_srcs<SKPSrc>(FLAGS_skps, "skp");
     }
     gather_file_srcs<MSKPSrc>(FLAGS_mskps, "mskp");
+#if !defined(SK_BUILD_FOR_GOOGLE3)
     gather_file_srcs<SkottySrc>(FLAGS_jsons, "json");
+#endif
 #if defined(SK_XML)
     gather_file_srcs<SVGSrc>(FLAGS_svgs, "svg");
 #endif