Tags mapped singletons in SkyValueEncoder

PiperOrigin-RevId: 187209783
diff --git a/src/main/java/com/google/devtools/build/skyframe/BUILD b/src/main/java/com/google/devtools/build/skyframe/BUILD
index 6d6a99f..c33e8ae 100644
--- a/src/main/java/com/google/devtools/build/skyframe/BUILD
+++ b/src/main/java/com/google/devtools/build/skyframe/BUILD
@@ -38,6 +38,7 @@
         "//src/main/java/com/google/devtools/build/lib/collect/nestedset",
         "//src/main/java/com/google/devtools/build/lib/concurrent",
         "//src/main/java/com/google/devtools/build/lib/profiler",
+        "//src/main/java/com/google/devtools/build/lib/skyframe/serialization/autocodec",
         "//src/main/java/com/google/devtools/build/lib/vfs",
         "//src/main/java/com/google/devtools/common/options",
         "//third_party:guava",