binding: Fixes the fallback mechanism of Document's named properties.

binding: Fixes the fallback mechanism of Document's named properties.

The old implementation only works for
a) there is a hidden prototype, and documentWrapper->GetPrototype()
  actually returns itself, or
b) fallbacked attributes are data-type properties.

Since we made attributes be accessor-type properties _and_ removed
the hidden prototype, the old implementation no longer works.

Fixed the issue using V8's GetRealNamedPropertyInPrototypeChain().

BUG=619036
Review-Url: https://codereview.chromium.org/2065523002
Cr-Commit-Position: refs/heads/master@{#399461}
(cherry picked from commit cccf8630bac25057f6afd30febf8c428cd486b8c)

Committed: https://chromium.googlesource.com/chromium/src/+/7de5e915f79aba616c2f349992c420246037a0ef

[Yuki, 2016-06-15 06:29:51]

Description was changed from

==========
binding: Fixes the fallback mechanism of Document's named properties.

The old implementation only works for
a) there is a hidden prototype, and documentWrapper->GetPrototype()
  actually returns itself, or
b) fallbacked attributes are data-type properties.

Since we made attributes be accessor-type properties _and_ removed
the hidden prototype, the old implementation no longer works.

Fixed the issue using V8's GetRealNamedPropertyInPrototypeChain().

BUG=619036

Review-Url: https://codereview.chromium.org/2065523002
Cr-Commit-Position: refs/heads/master@{#399461}
(cherry picked from commit cccf8630bac25057f6afd30febf8c428cd486b8c)
==========

to

==========
binding: Fixes the fallback mechanism of Document's named properties.

The old implementation only works for
a) there is a hidden prototype, and documentWrapper->GetPrototype()
  actually returns itself, or
b) fallbacked attributes are data-type properties.

Since we made attributes be accessor-type properties _and_ removed
the hidden prototype, the old implementation no longer works.

Fixed the issue using V8's GetRealNamedPropertyInPrototypeChain().

BUG=619036

Review-Url: https://codereview.chromium.org/2065523002
Cr-Commit-Position: refs/heads/master@{#399461}
(cherry picked from commit cccf8630bac25057f6afd30febf8c428cd486b8c)

Committed:
https://chromium.googlesource.com/chromium/src/+/7de5e915f79aba616c2f349992c4...
==========

[Yuki, 2016-06-15 06:29:54]

Committed patchset #1 (id:1) manually as
7de5e915f79aba616c2f349992c420246037a0ef.