Revert of Wait cloudtail termination in goma module

Revert of Wait cloudtail termination in goma module (patchset #7 id:120001 of https://codereview.chromium.org/2386073002/ )

Reason for revert:
https://build.chromium.org/p/tryserver.client.pdfium/builders/win_xfa_clang/builds/1134/steps/stop%20cloudtail/logs/stdio

Traceback (most recent call last):
  File "E:\b\build\scripts/slave\recipe_modules\goma\resources\cloudtail_utils.py", line 111, in <module>
    sys.exit(main())
  File "E:\b\build\scripts/slave\recipe_modules\goma\resources\cloudtail_utils.py", line 108, in main
    wait_termination(int(f.read()))
  File "E:\b\build\scripts/slave\recipe_modules\goma\resources\cloudtail_utils.py", line 69, in wait_termination
    os.waitpid(pid, 0)
OSError: [Errno 10] No child processes
step returned non-zero exit code: 1

Need to ignore OSError ECHILD?

Original issue's description:
> Wait cloudtail termination in goma module
> 
> This is follow up CL for https://codereview.chromium.org/2375843005/
> 
> BUG=
> 
> Committed: https://chromium.googlesource.com/chromium/tools/build/+/5ba4397bb3ab875a37501ec8eb0de33d1b4a1514

TBR=vadimsh@chromium.org,phajdan.jr@chromium.org,ukai@chromium.org,shinyak@chromium.org,yyanagisawa@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Committed: https://chromium.googlesource.com/chromium/tools/build/+/b38036b7df8cb000c51784ccd898571e9371a4cb

[tikuta, 2016-10-07 23:46:55]

The CQ bit was checked by tikuta@chromium.org

[tikuta, 2016-10-07 23:46:56]

Created Revert of Wait cloudtail termination in goma module

[commit-bot: I haz the power, 2016-10-07 23:47:02]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-10-07 23:47:09]

Description was changed from

==========
Revert of Wait cloudtail termination in goma module (patchset #7 id:120001 of
https://codereview.chromium.org/2386073002/ )

Reason for revert:
https://build.chromium.org/p/tryserver.client.pdfium/builders/win_xfa_clang/b...

Traceback (most recent call last):
  File
"E:\b\build\scripts/slave\recipe_modules\goma\resources\cloudtail_utils.py",
line 111, in <module>
    sys.exit(main())
  File
"E:\b\build\scripts/slave\recipe_modules\goma\resources\cloudtail_utils.py",
line 108, in main
    wait_termination(int(f.read()))
  File
"E:\b\build\scripts/slave\recipe_modules\goma\resources\cloudtail_utils.py",
line 69, in wait_termination
    os.waitpid(pid, 0)
OSError: [Errno 10] No child processes
step returned non-zero exit code: 1

Need to ignore OSError ECHILD?

Original issue's description:
> Wait cloudtail termination in goma module
> 
> This is follow up CL for https://codereview.chromium.org/2375843005/
> 
> BUG=
> 
> Committed:
https://chromium.googlesource.com/chromium/tools/build/+/5ba4397bb3ab875a3750...

TBR=vadimsh@chromium.org,phajdan.jr@chromium.org,ukai@chromium.org,shinyak@ch...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=
==========

to

==========
Revert of Wait cloudtail termination in goma module (patchset #7 id:120001 of
https://codereview.chromium.org/2386073002/ )

Reason for revert:
https://build.chromium.org/p/tryserver.client.pdfium/builders/win_xfa_clang/b...

Traceback (most recent call last):
  File
"E:\b\build\scripts/slave\recipe_modules\goma\resources\cloudtail_utils.py",
line 111, in <module>
    sys.exit(main())
  File
"E:\b\build\scripts/slave\recipe_modules\goma\resources\cloudtail_utils.py",
line 108, in main
    wait_termination(int(f.read()))
  File
"E:\b\build\scripts/slave\recipe_modules\goma\resources\cloudtail_utils.py",
line 69, in wait_termination
    os.waitpid(pid, 0)
OSError: [Errno 10] No child processes
step returned non-zero exit code: 1

Need to ignore OSError ECHILD?

Original issue's description:
> Wait cloudtail termination in goma module
> 
> This is follow up CL for https://codereview.chromium.org/2375843005/
> 
> BUG=
> 
> Committed:
https://chromium.googlesource.com/chromium/tools/build/+/5ba4397bb3ab875a3750...

TBR=vadimsh@chromium.org,phajdan.jr@chromium.org,ukai@chromium.org,shinyak@ch...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Committed:
https://chromium.googlesource.com/chromium/tools/build/+/b38036b7df8cb000c517...
==========

[commit-bot: I haz the power, 2016-10-07 23:47:09]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/tools/build/+/b38036b7df8cb000c517...