Port to FreeBSD.

--
Change-Id: I4e65cc583e758d2f7e45209ffcb37f6a871e2ed7
Reviewed-on: https://bazel-review.git.corp.google.com/#/c/1840
MOS_MIGRATED_REVID=101462155
diff --git a/tools/jdk/BUILD b/tools/jdk/BUILD
index 58db282..2ee3d68 100644
--- a/tools/jdk/BUILD
+++ b/tools/jdk/BUILD
@@ -16,6 +16,11 @@
 )
 
 filegroup(
+    name = "jni_md_header-freebsd",
+    srcs = ["//external:jni_md_header-freebsd"],
+)
+
+filegroup(
     name = "java",
     srcs = ["//external:java"],
 )