sandbox/win: Fix warnings found by clang chromium-style plugin on Windows.

sanbox/win: Fix warnings found by clang chromium-style plugin on Windows.

http://build.chromium.org/p/chromium.fyi/builders/CrWinClang/builds/605/steps/compile/logs/stdio

This fixes the following kind or warnings:

warning(clang): [chromium-style] Complex constructor has an inline body.
warning(clang): [chromium-style] Complex destructor has an inline body.
warning(clang): [chromium-style] complex class/struct needs an explicit out-of-line constructor.
warning(clang): [chromium-style] complex class/struct needs an explicit out-of-line destructor.

BUG=467287
R=thakis@chromium.org,cpu@chromium.org

Committed: https://crrev.com/25f1faa117156fcf67dc910d551e8225c50bfe75
Cr-Commit-Position: refs/heads/master@{#327069}

[tfarina, 2015-04-27 14:48:05]

Nico, is Carlos available to review this?

Is it fine to TBR him, if not?

[Nico, 2015-04-27 17:29:59]

cpu seemed to not be around last week at least. I'd say wait a few hours, maybe
he's around this week.

(cpu: Despite the subject, this is for sandbox/win, not base)

[cpu_(ooo_6.6-7.5), 2015-04-27 17:59:04]

lgtm

[cpu_(ooo_6.6-7.5), 2015-04-27 17:59:06]

The CQ bit was checked by cpu@chromium.org

[commit-bot: I haz the power, 2015-04-27 18:00:54]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1106203002/1

[commit-bot: I haz the power, 2015-04-27 18:06:33]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-27 18:07:33]

Patchset 1 (id:??) landed as
https://crrev.com/25f1faa117156fcf67dc910d551e8225c50bfe75
Cr-Commit-Position: refs/heads/master@{#327069}