[turbolizer] Redetermine graph bounding box after dragging a node.

[turbolizer] Redetermine graph bounding box after dragging a node.

If you dragged the node out of the bounding box, this commit allows you to see
it again after you zoom. The zoom looks jittery, but I think it's better than
not being able to see it at all.

BUG=
R=danno

Committed: https://crrev.com/cc51cfcac3333352c333358927fbd31eaa6e652b
Cr-Commit-Position: refs/heads/master@{#38024}

[bgeron, 2016-07-21 18:16:36]

Please take a look. I'm OOO on Friday, so discussing would best work on a
different day. Note that all there are some CL dependencies, none of which are
insurmountable. I try to send the CLs in order, so if you review in
chronological order you should be fine. This message is the same for all CLs.

[danno, 2016-07-25 13:55:29]

lgtm

[bgeron, 2016-07-25 13:58:45]

The CQ bit was checked by bgeron@google.com

[commit-bot: I haz the power, 2016-07-25 13:58:56]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-07-25 14:19:28]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-25 14:22:30]

Description was changed from

==========
[turbolizer] Redetermine graph bounding box after dragging a node.

If you dragged the node out of the bounding box, this commit allows you to see
it again after you zoom. The zoom looks jittery, but I think it's better than
not being able to see it at all.

BUG=
R=danno
==========

to

==========
[turbolizer] Redetermine graph bounding box after dragging a node.

If you dragged the node out of the bounding box, this commit allows you to see
it again after you zoom. The zoom looks jittery, but I think it's better than
not being able to see it at all.

BUG=
R=danno

Committed: https://crrev.com/cc51cfcac3333352c333358927fbd31eaa6e652b
Cr-Commit-Position: refs/heads/master@{#38024}
==========

[commit-bot: I haz the power, 2016-07-25 14:22:30]

Patchset 1 (id:??) landed as
https://crrev.com/cc51cfcac3333352c333358927fbd31eaa6e652b
Cr-Commit-Position: refs/heads/master@{#38024}