Added details of dartfmt change to 1.15 changelog

Added details of dartfmt change to 1.15 changelog

Moved Dartium updates under new Tools section

R=rnystrom@google.com

Committed: https://github.com/dart-lang/sdk/commit/6f6b345f751f14f61d348b3ea53df35828effe71

[kevmoo, 2016-03-09 23:01:40]

kevmoo@google.com changed reviewers:
+ rnystrom@google.com

[Bill Hesse, 2016-03-09 23:04:00]

whesse@google.com changed reviewers:
+ whesse@google.com

[Bill Hesse, 2016-03-09 23:04:00]

Please file a merge-to-stable issue for this, noting that it should only
piggyback on other merges, not trigger a new patch release itself.  Michael, do
you agree?

[kevmoo, 2016-03-09 23:05:33]

On 2016/03/09 23:04:00, Bill Hesse wrote:
> Please file a merge-to-stable issue for this, noting that it should only
> piggyback on other merges, not trigger a new patch release itself.  Michael,
do
> you agree?

...um, uh, I guess...

[Bob Nystrom, 2016-03-09 23:18:01]

lgtm

[kevmoo, 2016-03-09 23:19:33]

Description was changed from

==========
Added details of dartfmt change to 1.15 changelog

Moved Dartium updates under new Tools section
==========

to

==========
Added details of dartfmt change to 1.15 changelog

Moved Dartium updates under new Tools section

R=rnystrom@google.com

Committed:
https://github.com/dart-lang/sdk/commit/6f6b345f751f14f61d348b3ea53df35828effe71
==========

[kevmoo, 2016-03-09 23:19:34]

Committed patchset #1 (id:1) manually as
6f6b345f751f14f61d348b3ea53df35828effe71 (presubmit successful).