[DevTools] Fix out of process iframes not working on chrome://inspect.

[DevTools] Fix out of process iframes not working on chrome://inspect.

Regressed in recent refactoring of devtools discovery.
Added checks to existing tests.

BUG=627517
Committed: https://crrev.com/dda2ff1de0b3ca84fda1e92c196d57c66b7d5779
Cr-Commit-Position: refs/heads/master@{#419030}

[dgozman, 2016-09-15 22:09:08]

dgozman@chromium.org changed reviewers:
+ pfeldman@chromium.org

[dgozman, 2016-09-15 22:09:09]

Take a look please.

[pfeldman, 2016-09-15 22:12:07]

lgtm

[dgozman, 2016-09-15 22:14:16]

The CQ bit was checked by dgozman@chromium.org

[commit-bot: I haz the power, 2016-09-15 22:14:37]

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, 2016-09-15 23:10:44]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-15 23:14:25]

Description was changed from

==========
[DevTools] Fix out of process iframes not working on chrome://inspect.

Regressed in recent refactoring of devtools discovery.
Added checks to existing tests.

BUG=627517
==========

to

==========
[DevTools] Fix out of process iframes not working on chrome://inspect.

Regressed in recent refactoring of devtools discovery.
Added checks to existing tests.

BUG=627517

Committed: https://crrev.com/dda2ff1de0b3ca84fda1e92c196d57c66b7d5779
Cr-Commit-Position: refs/heads/master@{#419030}
==========

[commit-bot: I haz the power, 2016-09-15 23:14:26]

Patchset 1 (id:??) landed as
https://crrev.com/dda2ff1de0b3ca84fda1e92c196d57c66b7d5779
Cr-Commit-Position: refs/heads/master@{#419030}