[skottie] Disable on Android Framework builds

Make Skottie truly optional (own flag), and disable in framework builds
(to unblock landing the RapidJson refactoring).

Change-Id: I4611f915e43fe11c1f6754ab4a9f63e45af2f8d3
Reviewed-on: https://skia-review.googlesource.com/125872
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Mike Klein <mtklein@google.com>
diff --git a/dm/DM.cpp b/dm/DM.cpp
index e134ac5..34362ef 100644
--- a/dm/DM.cpp
+++ b/dm/DM.cpp
@@ -790,7 +790,7 @@
 
     gather_file_srcs<SKPSrc>(FLAGS_skps, "skp");
     gather_file_srcs<MSKPSrc>(FLAGS_mskps, "mskp");
-#if !defined(SK_BUILD_FOR_GOOGLE3)
+#if defined(SK_ENABLE_SKOTTIE)
     gather_file_srcs<SkottieSrc>(FLAGS_jsons, "json");
 #endif
 #if defined(SK_XML)