Add a BUILD file for java langtools.

Partial commit for third_party/*, see #7506.

Signed-off-by: iirina <elenairina@google.com>
diff --git a/third_party/java/java_tools/BUILD b/third_party/java/java_tools/BUILD
index 2f6128f..d5678f0 100644
--- a/third_party/java/java_tools/BUILD
+++ b/third_party/java/java_tools/BUILD
@@ -10,6 +10,7 @@
 filegroup(
     name = "bazel_embedded_java_tools",
     srcs = [
+        "BUILD.javalangtools",
         "BUILD.pkg",
         "BUILD-new.pkg",
     ],
diff --git a/third_party/java/java_tools/BUILD.javalangtools b/third_party/java/java_tools/BUILD.javalangtools
new file mode 100644
index 0000000..3dd56b9
--- /dev/null
+++ b/third_party/java/java_tools/BUILD.javalangtools
@@ -0,0 +1,19 @@
+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"])  # Apache 2.0
+
+
+filegroup(
+    name = "javac_jar",
+    srcs = ["@remote_java_tools//:java_tools/javac-9+181-r4173-1.jar"],
+)
+
+filegroup(
+    name = "jdk_compiler_jar",
+    srcs = ["@remote_java_tools//:java_tools/jdk_compiler.jar"],
+)
+
+filegroup(
+    name = "java_compiler_jar",
+    srcs = ["@remote_java_tools//:java_tools/java_compiler.jar"],
+)
\ No newline at end of file