[inspector] Cleanup inspector test

[inspector] Cleanup inspector test

- reduce boilerplate;
- encapsulate V8Inspector inside IsolateData;
- remove extra interfaces and classes.

BUG=none

Review-Url: https://codereview.chromium.org/2901523003
Cr-Commit-Position: refs/heads/master@{#45470}
Committed: https://chromium.googlesource.com/v8/v8/+/93c12e5d3fe2a66d9042710032899448fc76d581

[dgozman, 2017-05-22 18:10:15]

The CQ bit was checked by dgozman@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-05-22 18:10:26]

Dry run: CQ is trying da patch.

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

[dgozman, 2017-05-22 18:11:54]

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

[dgozman, 2017-05-22 18:11:54]

Could you please take a look?

[commit-bot: I haz the power, 2017-05-22 18:39:27]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-05-22 18:39:27]

Dry run: This issue passed the CQ dry run.

[kozy, 2017-05-22 19:49:02]

lgtm

[dgozman, 2017-05-22 20:44:58]

The CQ bit was checked by dgozman@chromium.org

[commit-bot: I haz the power, 2017-05-22 20:45:09]

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, 2017-05-22 20:46:43]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1495485898870780, "parent_rev":
"66d242dea56c0a61a0514edc8519e7fd998303f6", "commit_rev":
"93c12e5d3fe2a66d9042710032899448fc76d581"}

[commit-bot: I haz the power, 2017-05-22 20:46:50]

Description was changed from

==========
[inspector] Cleanup inspector test

- reduce boilerplate;
- encapsulate V8Inspector inside IsolateData;
- remove extra interfaces and classes.

BUG=none
==========

to

==========
[inspector] Cleanup inspector test

- reduce boilerplate;
- encapsulate V8Inspector inside IsolateData;
- remove extra interfaces and classes.

BUG=none

Review-Url: https://codereview.chromium.org/2901523003
Cr-Commit-Position: refs/heads/master@{#45470}
Committed:
https://chromium.googlesource.com/v8/v8/+/93c12e5d3fe2a66d9042710032899448fc7...
==========

[commit-bot: I haz the power, 2017-05-22 20:46:51]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/93c12e5d3fe2a66d9042710032899448fc7...