Add a histogram definition for Linux.GlibcVersion.

Add a histogram definition for Linux.GlibcVersion.

BUG=224531
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=195388

[Lei Zhang, 2013-04-18 22:39:58]

Same CL, different repo.

[jar (doing other things), 2013-04-18 22:45:58]

lgtm

[commit-bot: I haz the power, 2013-04-19 22:07:14]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/thestig@chromium.org/14199008/1

[commit-bot: I haz the power, 2013-04-19 22:07:19]

Presubmit check for 14199008-1 failed and returned exit status 1.

INFO:root:Found 1 file(s).

INFO:root:Loading histograms.xml...
INFO:root:Pretty-printing...
INFO:root:histograms.xml is correctly pretty-printed.
ERROR:root:Histograms Media.DetectedVideoCodec and Linux.GlibcVersion are not in
alphabetical order
ERROR:root:Error parsing histograms.xml
Traceback (most recent call last):
  File "validate_format.py", line 16, in <module>
    main()
  File "validate_format.py", line 12, in main
    histograms = extract_histograms.ExtractHistograms('histograms.xml')
  File
"/b/commit-queue/workdir/chromium/tools/metrics/histograms/extract_histograms.py",
line 362, in ExtractHistograms
    raise Error()
extract_histograms.Error
Running presubmit commit checks ...
Running /b/commit-queue/workdir/chromium/PRESUBMIT.py
Running /b/commit-queue/workdir/chromium/tools/PRESUBMIT.py
Running /b/commit-queue/workdir/chromium/tools/metrics/histograms/PRESUBMIT.py

** Presubmit ERRORS **
histograms.xml is not well formatted; run update_descriptions.py and fix the
reported errors

Presubmit checks took 2.2s to calculate.

[commit-bot: I haz the power, 2013-04-19 22:21:50]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/thestig@chromium.org/14199008/6001

[commit-bot: I haz the power, 2013-04-20 12:35:12]

Change committed as 195388