message: Add missing header include.
diff: @@ -20,6 +20,7 @@ limitations under the License.
  #include <vector>
  #include "llvm/ADT/Triple.h"
  +#include "llvm/Support/Host.h"
  #include "tensorflow/compiler/xla/client/client_library.h"
  #include "tensorflow/compiler/xla/client/xla_builder.h"
  #include "tensorflow/compiler/xla/client/xla_computation.h"
  