UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.116 Safari/537.36

Steps to reproduce the problem:
1. Using 4.7.4-1-ARCH #1 SMP PREEMPT Thu Sep 15 15:24:29 CEST 2016 x86_64 GNU/Linux
2. running fetch --nohooks webrtc_android
3. gclient sync

What is the expected behavior?
a full sync of the chromium rep

What went wrong?
src/chromium/src/build/detect_host_arch.py", line 42
    print DoMain([])
               ^
SyntaxError: invalid syntax
Traceback (most recent call last):
  File "src/third_party/binutils/download.py", line 130, in <module>
    sys.exit(main(sys.argv[1:]))
  File "src/third_party/binutils/download.py", line 112, in main
    arch = GetArch()
  File "src/third_party/binutils/download.py", line 52, in GetArch
    return subprocess.check_output(['python', DETECT_HOST_ARCH]).strip()
  File "/usr/lib/python2.7/subprocess.py", line 574, in check_output
    raise CalledProcessError(retcode, cmd, output=output)
subprocess.CalledProcessError: Command 

Did this work before? N/A 

Chrome version: 53.0.2785.116  Channel: n/a
OS Version: 4.7.4-1-ARCH
Flash Version: Shockwave Flash 23.0 r0

There is a syntax error in src/chromium/src/build/detect_host_arch.py
it should be print DoMain() and setting the function definition of DoMain
to DoMain(): instead of DoMain(_):