Use correct creation context when converting sequences to V8

Use correct creation context when converting sequences to V8

The |creationContext| argument is often a reference to a window proxy
object, that may become incorrect to use if the frame is navigated and/or
detached during the loop that converts values.

BUG=607483
Review-Url: https://codereview.chromium.org/1924073003
Cr-Commit-Position: refs/heads/master@{#390408}
(cherry picked from commit eb335fd1006cef3299221ebd14a8795679660e32)

Committed: https://chromium.googlesource.com/chromium/src/+/29352c3d107adf7fadecf6c5073fa492f1ece220

[Jens Widell, 2016-05-10 11:10:03]

Description was changed from

==========
Use correct creation context when converting sequences to V8

The |creationContext| argument is often a reference to a window proxy
object, that may become incorrect to use if the frame is navigated and/or
detached during the loop that converts values.

BUG=607483

Review-Url: https://codereview.chromium.org/1924073003
Cr-Commit-Position: refs/heads/master@{#390408}
(cherry picked from commit eb335fd1006cef3299221ebd14a8795679660e32)
==========

to

==========
Use correct creation context when converting sequences to V8

The |creationContext| argument is often a reference to a window proxy
object, that may become incorrect to use if the frame is navigated and/or
detached during the loop that converts values.

BUG=607483

Review-Url: https://codereview.chromium.org/1924073003
Cr-Commit-Position: refs/heads/master@{#390408}
(cherry picked from commit eb335fd1006cef3299221ebd14a8795679660e32)

Committed:
https://chromium.googlesource.com/chromium/src/+/29352c3d107adf7fadecf6c5073f...
==========

[Jens Widell, 2016-05-10 11:10:09]

Committed patchset #1 (id:1) manually as
29352c3d107adf7fadecf6c5073fa492f1ece220.