Bazel: Support building with Java 9

Bazel@HEAD supports Java 9 and the upcoming Bazel release 0.15.0 will
include Java 9 JDK.

Test Plan:

  $ bazel test \
      --host_java_toolchain=@bazel_tools//tools/jdk:toolchain_java9 \
      --java_toolchain=@bazel_tools//tools/jdk:toolchain_java9 //...

Change-Id: I9d6b716391bbf96b0894a8f3be900bcf8ef48903

1 files changed, 7 insertions, 0 deletions

diff --git a/BUILD b/BUILD
index 91e2dec3b1..4bba5a5cf7 100644
--- a/BUILD
+++ b/BUILD
@@ -3,6 +3,13 @@ package(default_visibility = ["//visibility:public"])
 load("//tools/bzl:genrule2.bzl", "genrule2")
 load("//tools/bzl:pkg_war.bzl", "pkg_war")
 
+config_setting(
+    name = "java9",
+    values = {
+        "java_toolchain": "@bazel_tools//tools/jdk:toolchain_java9",
+    },
+)
+
 genrule(
     name = "gen_version",
     outs = ["version.txt"],