Setting TestRunner's main window from BlinkTestRunner.

Make sure TestRunner::topLoadingFrame is from the main test window.

Before this CL, TestRunner::web_view_ would always be set to the
first WebView/RenderView created in the given renderer process.
This has been interfering with TestRunner::topLoadingFrame tracking
- in OOPIF modes this might be tracking a frame not belonging to the
main window.

BUG=595089
Committed: https://crrev.com/8973c521e42739f6c2d1e1b3c8fa7c6e90753014
Cr-Commit-Position: refs/heads/master@{#390097}

[Łukasz Anforowicz, 2016-04-21 22:34:18]

Description was changed from

==========
Setting TestRunner's main window from BlinkTestRunner.

BUG=595089
==========

to

==========
Make sure TestRunner::topLoadingFrame is from the main test window.

Before this CL, TestRunner::web_view_ would always be set to the
first WebView/RenderView created in the given renderer process.
This has been interfering with TestRunner::topLoadingFrame tracking
- in OOPIF modes this might be tracking a frame not belonging to the
main window.

BUG=595089
==========

[Łukasz Anforowicz, 2016-04-23 04:04:47]

lukasza@chromium.org changed reviewers:
+ jochen@chromium.org

[Łukasz Anforowicz, 2016-04-23 04:04:48]

jochen@, could you please take a look?

[jochen (gone - plz use gerrit), 2016-04-27 11:58:23]

lgtm

[Łukasz Anforowicz, 2016-04-27 15:06:11]

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

[commit-bot: I haz the power, 2016-04-27 15:06:35]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1896623002/80001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1896623002/80001

[commit-bot: I haz the power, 2016-04-27 15:55:31]

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

[commit-bot: I haz the power, 2016-04-27 15:55:32]

Dry run: This issue passed the CQ dry run.

[Łukasz Anforowicz, 2016-04-27 16:26:59]

The CQ bit was checked by lukasza@chromium.org

[commit-bot: I haz the power, 2016-04-27 16:27:18]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1896623002/80001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1896623002/80001

[commit-bot: I haz the power, 2016-04-27 16:32:38]

Committed patchset #5 (id:80001)

[commit-bot: I haz the power, 2016-04-30 17:10:27]

Patchset 5 (id:??) landed as
https://crrev.com/8973c521e42739f6c2d1e1b3c8fa7c6e90753014
Cr-Commit-Position: refs/heads/master@{#390097}

[commit-bot: I haz the power, 2016-04-30 17:50:20]

Description was changed from

==========
Make sure TestRunner::topLoadingFrame is from the main test window.

Before this CL, TestRunner::web_view_ would always be set to the
first WebView/RenderView created in the given renderer process.
This has been interfering with TestRunner::topLoadingFrame tracking
- in OOPIF modes this might be tracking a frame not belonging to the
main window.

BUG=595089
==========

to

==========
Make sure TestRunner::topLoadingFrame is from the main test window.

Before this CL, TestRunner::web_view_ would always be set to the
first WebView/RenderView created in the given renderer process.
This has been interfering with TestRunner::topLoadingFrame tracking
- in OOPIF modes this might be tracking a frame not belonging to the
main window.

BUG=595089

Committed: https://crrev.com/8973c521e42739f6c2d1e1b3c8fa7c6e90753014
Cr-Commit-Position: refs/heads/master@{#390097}
==========