Fix blink_perf.dom select-single-add.html.

Fix blink_perf.dom select-single-add.html.

The test has never worked as expected.
The intention of the test is to measure the performance to add OPTIONs to a
SELECT element by
 - Adding 250 selected OPTIONs, and
 - Adding 250 unselected OPTIONs.

But it worked expectedly only at the first run. Actually, 499 unselected OPTIONs
and 1 selected OPTION were added after the first run because appendChild()
updates selected state.

This CL makes select-single-add.html slower intentionally.
This CL doesn't affect production.

BUG=625897
NOTRY=true

Committed: https://crrev.com/48c94c10227b4c93bfbc4cf44081bc633c974043
Cr-Commit-Position: refs/heads/master@{#403835}

[tkent, 2016-07-06 00:50:11]

Description was changed from

==========
Fix blink_perf.dom select-single-add.html.

The test has never worked as expected.
The intention of the test is to measure the performance to add OPTIONs to a
SELECT element by
 - Adding 250 selected OPTIONs, and
 - Adding 250 unselected OPTIONs.

But it worked expectedly only at the first run. Actually, 499 unselected OPTIONs
and 1 selected OPTION were added after the first run because appendChild()
updates selected state.

This CL make select-single-add.html slower intentionally.
This CL doesn't affect production.

BUG=625897
==========

to

==========
Fix blink_perf.dom select-single-add.html.

The test has never worked as expected.
The intention of the test is to measure the performance to add OPTIONs to a
SELECT element by
 - Adding 250 selected OPTIONs, and
 - Adding 250 unselected OPTIONs.

But it worked expectedly only at the first run. Actually, 499 unselected OPTIONs
and 1 selected OPTION were added after the first run because appendChild()
updates selected state.

This CL make select-single-add.html slower intentionally.
This CL doesn't affect production.

BUG=625897
NOTRY=true
==========

[tkent, 2016-07-06 00:50:24]

tkent@chromium.org changed reviewers:
+ keishi@chromium.org

[tkent, 2016-07-06 00:50:24]

Keishi, would you review this please?

[tkent, 2016-07-06 00:51:26]

Description was changed from

==========
Fix blink_perf.dom select-single-add.html.

The test has never worked as expected.
The intention of the test is to measure the performance to add OPTIONs to a
SELECT element by
 - Adding 250 selected OPTIONs, and
 - Adding 250 unselected OPTIONs.

But it worked expectedly only at the first run. Actually, 499 unselected OPTIONs
and 1 selected OPTION were added after the first run because appendChild()
updates selected state.

This CL make select-single-add.html slower intentionally.
This CL doesn't affect production.

BUG=625897
NOTRY=true
==========

to

==========
Fix blink_perf.dom select-single-add.html.

The test has never worked as expected.
The intention of the test is to measure the performance to add OPTIONs to a
SELECT element by
 - Adding 250 selected OPTIONs, and
 - Adding 250 unselected OPTIONs.

But it worked expectedly only at the first run. Actually, 499 unselected OPTIONs
and 1 selected OPTION were added after the first run because appendChild()
updates selected state.

This CL makes select-single-add.html slower intentionally.
This CL doesn't affect production.

BUG=625897
NOTRY=true
==========

[keishi, 2016-07-06 01:27:44]

LGTM

[tkent, 2016-07-06 01:30:49]

The CQ bit was checked by tkent@chromium.org

[commit-bot: I haz the power, 2016-07-06 01:31:19]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-07-06 01:36:15]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-06 01:36:17]

CQ bit was unchecked.

[commit-bot: I haz the power, 2016-07-06 01:38:33]

Description was changed from

==========
Fix blink_perf.dom select-single-add.html.

The test has never worked as expected.
The intention of the test is to measure the performance to add OPTIONs to a
SELECT element by
 - Adding 250 selected OPTIONs, and
 - Adding 250 unselected OPTIONs.

But it worked expectedly only at the first run. Actually, 499 unselected OPTIONs
and 1 selected OPTION were added after the first run because appendChild()
updates selected state.

This CL makes select-single-add.html slower intentionally.
This CL doesn't affect production.

BUG=625897
NOTRY=true
==========

to

==========
Fix blink_perf.dom select-single-add.html.

The test has never worked as expected.
The intention of the test is to measure the performance to add OPTIONs to a
SELECT element by
 - Adding 250 selected OPTIONs, and
 - Adding 250 unselected OPTIONs.

But it worked expectedly only at the first run. Actually, 499 unselected OPTIONs
and 1 selected OPTION were added after the first run because appendChild()
updates selected state.

This CL makes select-single-add.html slower intentionally.
This CL doesn't affect production.

BUG=625897
NOTRY=true

Committed: https://crrev.com/48c94c10227b4c93bfbc4cf44081bc633c974043
Cr-Commit-Position: refs/heads/master@{#403835}
==========

[commit-bot: I haz the power, 2016-07-06 01:38:33]

Patchset 1 (id:??) landed as
https://crrev.com/48c94c10227b4c93bfbc4cf44081bc633c974043
Cr-Commit-Position: refs/heads/master@{#403835}