Revert of C++ readability review

Revert of C++ readability review (patchset #10 id:180001 of https://codereview.chromium.org/706993003/)

Reason for revert:
It looks like this broke tests the following tests on Linux Chromium OS:
AlarmTimerTest.OneShotTimerConcurrentResetAndTimerFired
AlarmTimerTest.RepeatingTimerConcurrentResetAndTimerFired

Example output:
AlarmTimerTest.OneShotTimerConcurrentResetAndTimerFired (run #1):
[ RUN      ] AlarmTimerTest.OneShotTimerConcurrentResetAndTimerFired
[11334:11334:0406/201742:404219967:INFO:alarm_timer_chromeos.cc(166)] CLOCK_REALTIME_ALARM not supported on this system: Invalid argument
[11334:11334:0406/201742:404230154:FATAL:timer.cc(116)] Check failed: !user_task_.is_null().

AlarmTimerTest.RepeatingTimerConcurrentResetAndTimerFired (run #1):
[ RUN      ] AlarmTimerTest.RepeatingTimerConcurrentResetAndTimerFired
[11382:11382:0406/201748:411022458:INFO:alarm_timer_chromeos.cc(166)] CLOCK_REALTIME_ALARM not supported on this system: Invalid argument
../../components/timers/alarm_timer_unittest.cc:469: Failure
Value of: did_run
  Actual: true
Expected: false

Example build:
http://build.chromium.org/p/chromium.chromiumos/builders/Linux%20ChromiumOS%20Tests%20%281%29/builds/996

Original issue's description:
> C++ readability review
>
> BUG=b/18275087
>
> Committed: https://crrev.com/05e4d854dca737cfb43cd967cd72d024f6b1625b
> Cr-Commit-Position: refs/heads/master@{#324004}

TBR=derat@chromium.org,gromer@google.com,zea@chromium.org,chirantan@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=b/18275087

Committed: https://crrev.com/0531a97fe4309636fc34af148f21960d3c1614f4
Cr-Commit-Position: refs/heads/master@{#324009}

[falken, 2015-04-07 03:29:19]

Created Revert of C++ readability review

[commit-bot: I haz the power, 2015-04-07 03:29:38]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1058693003/1

[commit-bot: I haz the power, 2015-04-07 03:30:22]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-07 03:31:13]

Patchset 1 (id:??) landed as
https://crrev.com/0531a97fe4309636fc34af148f21960d3c1614f4
Cr-Commit-Position: refs/heads/master@{#324009}