package_from_installed: Put env in json file behind "env" key.

package_from_installed: Put env in json file behind "env" key.

Every time I write a json file, I end up wishing I put my toplevel items
into non-toplevel items down the line when I want to add more stuff to the
json file.  Address this now, while no toolchain with this json file has
been built yet.

Follow-up to https://codereview.chromium.org/1706423002/

BUG=495204
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=298908

[Nico, 2016-02-22 18:43:32]

thakis@chromium.org changed reviewers:
+ scottmg@chromium.org

[scottmg, 2016-02-22 21:33:47]

lgtm

[Nico, 2016-02-22 21:34:36]

The CQ bit was checked by thakis@chromium.org

[commit-bot: I haz the power, 2016-02-22 21:34:38]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1718083003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1718083003/1

[commit-bot: I haz the power, 2016-02-22 21:36:24]

Description was changed from

==========
package_from_installed: Put env in json file behind "env" key.

Every time I write a json file, I end up wishing I put my toplevel items
into non-toplevel items down the line when I want to add more stuff to the
json file.  Address this now, while no toolchain with this json file has
been built yet.

Follow-up to https://codereview.chromium.org/1706423002/

BUG=495204
==========

to

==========
package_from_installed: Put env in json file behind "env" key.

Every time I write a json file, I end up wishing I put my toplevel items
into non-toplevel items down the line when I want to add more stuff to the
json file.  Address this now, while no toolchain with this json file has
been built yet.

Follow-up to https://codereview.chromium.org/1706423002/

BUG=495204

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=298908
==========

[commit-bot: I haz the power, 2016-02-22 21:36:24]

Committed patchset #1 (id:1) as
http://src.chromium.org/viewvc/chrome?view=rev&revision=298908