Reland "Add base::TimeDelta::Max()"

Reland "Add base::TimeDelta::Max()"

Media was exposing max timedeltas to JSON, which wasn't working with
infinity.

R=scherkus@chromium.org
TBR=ajwong@chromium.org,jar@chromium.org,jamesr@chomium.org,acolwell@chromium.org,nick@chromium.org
BUG=None

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=254717

[gavinp, 2014-03-03 19:14:10]

scherkus: PTAL, I call the time period "unknown" as we discussed in email.

[scherkus (not reviewing), 2014-03-04 01:50:06]

media lgtm

appreciate the fix!

[awong, 2014-03-04 01:50:53]

rubber-stamp LGTM

[gavinp, 2014-03-04 02:10:27]

The CQ bit was checked by gavinp@chromium.org

[commit-bot: I haz the power, 2014-03-04 02:14:59]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/gavinp@chromium.org/183763011/100001

[commit-bot: I haz the power, 2014-03-04 08:15:01]

Change committed as 254717

[apavlov, 2014-03-04 10:57:29]

A revert of this CL has been created in
https://codereview.chromium.org/179813009/ by apavlov@chromium.org.

The reason for reverting is: http/tests/media/video-cookie.html is asserting on
debug bots.

[gavinp, 2014-03-04 14:42:38]

On 2014/03/04 10:57:29, apavlov wrote:
> A revert of this CL has been created in
> https://codereview.chromium.org/179813009/ by mailto:apavlov@chromium.org.
> 
> The reason for reverting is: http/tests/media/video-cookie.html is asserting
on
> debug bots.

Scary how much the media log was doing this. See
https://codereview.chromium.org/186683002/ for the fix.