UserAgent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:57.0) Gecko/20100101 Firefox/57.0

Steps to reproduce the problem:
1. ./build_packages --board=$BOARD

What is the expected behavior?

What went wrong?
firewalld-0.0.1-r1552: ../../../../../../../tmp/portage/chromeos-base/firewalld-0.0.1-r1552/work/firewalld-0.0.1/platform2/firewalld/firewall_service.h:27:10: fatal error: 'dbus_bindings/org.chromium.Firewalld.h' file not found
firewalld-0.0.1-r1552: #include "dbus_bindings/org.chromium.Firewalld.h"
firewalld-0.0.1-r1552:          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
firewalld-0.0.1-r1552: 1 error generated.
firewalld-0.0.1-r1552: ninja: build stopped: subcommand failed.
firewalld-0.0.1-r1552: Traceback (most recent call last):
firewalld-0.0.1-r1552:   File "/build/reef/tmp/portage/chromeos-base/firewalld-0.0.1-r1552/work/firewalld-0.0.1/platform2/common-mk/platform2.py", line 333, in <module>
firewalld-0.0.1-r1552:     main(sys.argv[1:])
firewalld-0.0.1-r1552:   File "/build/reef/tmp/portage/chromeos-base/firewalld-0.0.1-r1552/work/firewalld-0.0.1/platform2/common-mk/platform2.py", line 329, in main
firewalld-0.0.1-r1552:     getattr(p2, options.action)(options.args)
firewalld-0.0.1-r1552:   File "/build/reef/tmp/portage/chromeos-base/firewalld-0.0.1-r1552/work/firewalld-0.0.1/platform2/common-mk/platform2.py", line 270, in compile
firewalld-0.0.1-r1552:     % ' '.join(map(repr, ninja_args)))
firewalld-0.0.1-r1552: AssertionError: Error running: 'ninja' '-C' '/build/reef/var/cache/portage/chromeos-base/firewalld/out/Default' '-j' '1' 'all'
firewalld-0.0.1-r1552:  * ERROR: chromeos-base/firewalld-0.0.1-r1552::chromiumos failed (compile phase):
firewalld-0.0.1-r1552:  *   (no error message)

Did this work before? N/A 

Chrome version: 9763.0.0-rc2  Channel: n/a
OS Version: x86_64
Flash Version: ubuntu14.04

Thanks for your help.
Is't very urgent for me to solve this problem.