bindings: Adds a layout test to check Window's name look-up behavior.

bindings: Adds a layout test to check Window's name look-up behavior.

Adds a layout test to showcase expected results of name look-up of
Window's members.  The planned bahavioral change will fix these test cases.

The expected output of the test is:
----------------
This is a testharness.js-based test.
PASS Named access test.  Window's members should have priority over named properties.
PASS WindowProperties object should exist.
PASS WindowProperties object should provide named access.
PASS Window's members should be own members.
Harness: the test ran to completion.
----------------
(copied from test results on Firefox.)

BUG=516274
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=200382

[Yuki, 2015-08-11 06:58:42]

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

[Yuki, 2015-08-11 06:58:42]

Could you review this CL?

[haraken, 2015-08-11 07:00:52]

I'm just curious but what's the behavior of Safari and IE?

https://codereview.chromium.org/1282223003/diff/1/LayoutTests/fast/dom/Window...
File LayoutTests/fast/dom/Window/lookup-behavior.html (right):

https://codereview.chromium.org/1282223003/diff/1/LayoutTests/fast/dom/Window...
LayoutTests/fast/dom/Window/lookup-behavior.html:10: test(function() {

Shall we add TODO(yukishiino) and mention that the failure is an expected one at
the moment?

[Yuki, 2015-08-12 04:51:49]

IE and Safari
- don't support WindowProperties object.
- place some of members on Window.prototype (should be on 'window' object).
- don't expose/support EventTarget interface (i.e. Window doesn't inherit from
EventTarget).

Having said that, most of Window members are placed on 'window' instance object,
and they never get shadowed by named properties.

All the browsers (except for Chrome) pass the first and fourth test in
lookup-behavior.html.

https://codereview.chromium.org/1282223003/diff/1/LayoutTests/fast/dom/Window...
File LayoutTests/fast/dom/Window/lookup-behavior.html (right):

https://codereview.chromium.org/1282223003/diff/1/LayoutTests/fast/dom/Window...
LayoutTests/fast/dom/Window/lookup-behavior.html:10: test(function() {
On 2015/08/11 07:00:52, haraken wrote:
> 
> Shall we add TODO(yukishiino) and mention that the failure is an expected one
at
> the moment?
> 

Done.

[haraken, 2015-08-12 05:00:31]

On 2015/08/12 04:51:49, Yuki wrote:
> IE and Safari
> - don't support WindowProperties object.
> - place some of members on Window.prototype (should be on 'window' object).
> - don't expose/support EventTarget interface (i.e. Window doesn't inherit from
> EventTarget).
> 
> Having said that, most of Window members are placed on 'window' instance
object,
> and they never get shadowed by named properties.

Thanks, LGTM.

[Yuki, 2015-08-12 05:21:47]

The CQ bit was checked by yukishiino@chromium.org

[commit-bot: I haz the power, 2015-08-12 05:21:54]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1282223003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1282223003/20001

[commit-bot: I haz the power, 2015-08-12 06:05:25]

Committed patchset #2 (id:20001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=200382