binding: Window-returning attributes return null if a Window is detached.

binding: Window-returning attributes return null if a Window is detached.

Makes the attributes that return a WindowProxy return null if the
browsing context of the Window is detached in order to avoid crashes
that are caused by accessing to a ScriptState for the detached browsing
context.

This is a kind of first aid, and not the right fix.  The spec requires
DOM attributes such as Window.parent or top to return the WindowProxy
of the browsing context if it's detached.  I.e. we need to fully support
detached frames.

BUG=621730, 621577
Committed: https://crrev.com/eb73fb7bd81b3253a36171851da62e15e5f88b41
Cr-Commit-Position: refs/heads/master@{#401007}

[Yuki, 2016-06-21 13:27:52]

yukishiino@chromium.org changed reviewers:
+ haraken@chromium.org

[Yuki, 2016-06-21 13:27:53]

Could you review this CL?
Hope this fix the crashes.

[haraken, 2016-06-21 13:42:08]

LGTM to try.

[Yuki, 2016-06-21 13:47:51]

The CQ bit was checked by yukishiino@chromium.org

[commit-bot: I haz the power, 2016-06-21 13:48:09]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2085983002/1

[commit-bot: I haz the power, 2016-06-21 16:14:56]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-21 16:20:11]

Description was changed from

==========
binding: Window-returning attributes return null if a Window is detached.

Makes the attributes that return a WindowProxy return null if the
browsing context of the Window is detached in order to avoid crashes
that are caused by accessing to a ScriptState for the detached browsing
context.

This is a kind of first aid, and not the right fix.  The spec requires
DOM attributes such as Window.parent or top to return the WindowProxy
of the browsing context if it's detached.  I.e. we need to fully support
detached frames.

BUG=621730,621577
==========

to

==========
binding: Window-returning attributes return null if a Window is detached.

Makes the attributes that return a WindowProxy return null if the
browsing context of the Window is detached in order to avoid crashes
that are caused by accessing to a ScriptState for the detached browsing
context.

This is a kind of first aid, and not the right fix.  The spec requires
DOM attributes such as Window.parent or top to return the WindowProxy
of the browsing context if it's detached.  I.e. we need to fully support
detached frames.

BUG=621730,621577

Committed: https://crrev.com/eb73fb7bd81b3253a36171851da62e15e5f88b41
Cr-Commit-Position: refs/heads/master@{#401007}
==========

[commit-bot: I haz the power, 2016-06-21 16:20:12]

Patchset 1 (id:??) landed as
https://crrev.com/eb73fb7bd81b3253a36171851da62e15e5f88b41
Cr-Commit-Position: refs/heads/master@{#401007}