Update SplayTreeMap with a work-around for frog.

Update SplayTreeMap with a work-around for frog.
Committed: https://code.google.com/p/dart/source/detail?r=5026

[kasperl, 2012-03-06 14:05:21]

LGTM. I don't know why you would actually want that parameter to be optional. To
me, this is cleaner.

[Anders Johnsen, 2012-03-06 14:06:31]

I agree, this is better. Thank you!

[ahe, 2012-03-06 15:42:49]

Don't forget to update the status files. The frog build bots are now red because
SplayTest works.

[Jennifer Messerly, 2012-03-06 15:58:06]

On 2012/03/06 15:42:49, ahe wrote:
> Don't forget to update the status files. The frog build bots are now red
because
> SplayTest works.

no worries, I submitted https://chromiumcodereview.appspot.com//9615013

[Anders Johnsen, 2012-03-06 16:31:08]

Sorry guys, I'm still getting used to the status files. I'll try to be more
aware in the future!

[ahe, 2012-03-06 16:46:33]

On 2012/03/06 16:31:08, ajohnsen wrote:
> Sorry guys, I'm still getting used to the status files. I'll try to be more
> aware in the future!

As far as I'm concerned, the system works fine. You made the build bot red, and
you got a nag email. So what if it isn't fully automated? ;-)

Cheers,
Peter