Enable the bootstrap sandbox by default.

Enable the bootstrap sandbox by default.

This will place renderer processes under the bootstrap sandbox. This can be
disabled with --disable-bootstrap-sandbox.

BUG=367863
Committed: https://crrev.com/2dded5291bc5e9427721e1a06c74f2a80a86e8fa
Cr-Commit-Position: refs/heads/master@{#350006}

[Robert Sesek, 2015-09-21 18:11:04]

rsesek@chromium.org changed reviewers:
+ avi@chromium.org

[Robert Sesek, 2015-09-21 18:11:04]

Here we go!

(Blink trybots seem to have issues, so ignoring the red)

[Avi (use Gerrit), 2015-09-21 18:47:14]

On 2015/09/21 18:11:04, Robert Sesek wrote:
> Here we go!
> 
> (Blink trybots seem to have issues, so ignoring the red)

Whoo! LGTM

[Robert Sesek, 2015-09-21 20:07:56]

The CQ bit was checked by rsesek@chromium.org

[commit-bot: I haz the power, 2015-09-21 20:08:48]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1352623003/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1352623003/40001

[commit-bot: I haz the power, 2015-09-21 20:14:56]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-09-21 20:15:42]

Patchset 3 (id:??) landed as
https://crrev.com/2dded5291bc5e9427721e1a06c74f2a80a86e8fa
Cr-Commit-Position: refs/heads/master@{#350006}

[Robert Sesek, 2015-09-21 23:39:52]

A revert of this CL (patchset #3 id:40001) has been created in
https://codereview.chromium.org/1355043004/ by rsesek@chromium.org.

The reason for reverting is: Caused Mac 10.10 layout failures:
http://build.chromium.org/p/chromium.webkit/builders/WebKit%20Mac10.10/builds....