Clean up base/process/process_metrics_linux.cc.

Clean up base/process/process_metrics_linux.cc.

- Use more StringPieces and C++11.
- Merge some repeated code.
- Fix nits.

Review-Url: https://codereview.chromium.org/2858213002
Cr-Commit-Position: refs/heads/master@{#469404}
Committed: https://chromium.googlesource.com/chromium/src/+/bc11dd614b1aa24a89e2ba977afbe01ad269c1bc

[Lei Zhang, 2017-05-04 06:25:11]

The CQ bit was checked by thestig@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-05-04 06:25:21]

Dry run: 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, 2017-05-04 07:08:04]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-05-04 07:08:05]

Dry run: Try jobs failed on following builders:
  android_compile_dbg on master.tryserver.chromium.android (JOB_FAILED,
https://build.chromium.org/p/tryserver.chromium.android/builders/android_comp...)

[Lei Zhang, 2017-05-04 07:33:31]

The CQ bit was checked by thestig@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-05-04 07:33:37]

Dry run: CQ is trying da patch.

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

[Lei Zhang, 2017-05-04 07:34:42]

The CQ bit was checked by thestig@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-05-04 07:34:47]

Dry run: CQ is trying da patch.

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

[Lei Zhang, 2017-05-04 07:36:06]

Patchset #3 (id:40001) has been deleted

[commit-bot: I haz the power, 2017-05-04 09:41:30]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-05-04 09:41:31]

Dry run: This issue passed the CQ dry run.

[Lei Zhang, 2017-05-04 17:37:40]

thestig@chromium.org changed reviewers:
+ mark@chromium.org

[Mark Mentovai, 2017-05-04 17:41:48]

This is generally a bit better! LGTM, thanks for the cleanup.

[Lei Zhang, 2017-05-04 18:49:40]

The CQ bit was checked by thestig@chromium.org

[commit-bot: I haz the power, 2017-05-04 18:50:11]

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, 2017-05-04 18:55:12]

CQ is committing da patch.

Bot data: {"patchset_id": 60001, "attempt_start_ts": 1493923780864140,
"parent_rev": "2df8c3016f045d03ac10f347792d65809268c980", "commit_rev":
"bc11dd614b1aa24a89e2ba977afbe01ad269c1bc"}

[commit-bot: I haz the power, 2017-05-04 18:55:57]

Description was changed from

==========
Clean up base/process/process_metrics_linux.cc.

- Use more StringPieces and C++11.
- Merge some repeated code.
- Fix nits.
==========

to

==========
Clean up base/process/process_metrics_linux.cc.

- Use more StringPieces and C++11.
- Merge some repeated code.
- Fix nits.

Review-Url: https://codereview.chromium.org/2858213002
Cr-Commit-Position: refs/heads/master@{#469404}
Committed:
https://chromium.googlesource.com/chromium/src/+/bc11dd614b1aa24a89e2ba977afb...
==========

[commit-bot: I haz the power, 2017-05-04 18:55:58]

Committed patchset #3 (id:60001) as
https://chromium.googlesource.com/chromium/src/+/bc11dd614b1aa24a89e2ba977afb...