Move MockScriptElementBase to a separate header file

Move MockScriptElementBase to a separate header file

https://codereview.chromium.org/2653923008/ will add a new file that uses
MockScriptElementBase.

BUG=694702
Review-Url: https://codereview.chromium.org/2821243003
Cr-Commit-Position: refs/heads/master@{#465452}
Committed: https://chromium.googlesource.com/chromium/src/+/76259cd66b9138f4fc474b955ed035d0f27e7dd4

[hiroshige, 2017-04-18 23:06:36]

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

[commit-bot: I haz the power, 2017-04-18 23:07:16]

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

[hiroshige, 2017-04-19 00:40:11]

Description was changed from

==========
Move MockScriptElementBase to a separate header file

BUG=
==========

to

==========
Move MockScriptElementBase to a separate header file

https://codereview.chromium.org/2653923008/ will add a new file that uses
MockScriptElementBase.

BUG=694702
==========

[hiroshige, 2017-04-19 00:40:34]

hiroshige@chromium.org changed reviewers:
+ kouhei@chromium.org

[hiroshige, 2017-04-19 00:40:35]

PTAL

[kouhei (in TOK), 2017-04-19 00:43:07]

lgtm

[hiroshige, 2017-04-19 01:02:59]

The CQ bit was unchecked by hiroshige@chromium.org

[hiroshige, 2017-04-19 01:03:04]

The CQ bit was checked by hiroshige@chromium.org

[commit-bot: I haz the power, 2017-04-19 01:03:17]

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, 2017-04-19 01:08:50]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1492563784954740, "parent_rev":
"bbe9ad733bbdf501cc63db9b624cfed076d33c32", "commit_rev":
"76259cd66b9138f4fc474b955ed035d0f27e7dd4"}

[commit-bot: I haz the power, 2017-04-19 01:09:00]

Description was changed from

==========
Move MockScriptElementBase to a separate header file

https://codereview.chromium.org/2653923008/ will add a new file that uses
MockScriptElementBase.

BUG=694702
==========

to

==========
Move MockScriptElementBase to a separate header file

https://codereview.chromium.org/2653923008/ will add a new file that uses
MockScriptElementBase.

BUG=694702

Review-Url: https://codereview.chromium.org/2821243003
Cr-Commit-Position: refs/heads/master@{#465452}
Committed:
https://chromium.googlesource.com/chromium/src/+/76259cd66b9138f4fc474b955ed0...
==========

[commit-bot: I haz the power, 2017-04-19 01:09:01]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/76259cd66b9138f4fc474b955ed0...