Add performance tests of page up/down key navigation

Add performance tests of page up/down key navigation

Page up/down in textarea with lots of line w/o spellcheck is slow.

These test creates a textarea w/o spellcheck and insert 20000 lines.
Then, exec page up/down command at the bottom of the textarea.

BUG=692379
Review-Url: https://codereview.chromium.org/2696133002
Cr-Commit-Position: refs/heads/master@{#450648}
Committed: https://chromium.googlesource.com/chromium/src/+/2951b0dfa47f9b19c0ed36c383a0f131df0d23c3

[yoichio, 2017-02-15 07:38:18]

Description was changed from

==========
init

BUG=
==========

to

==========
Add performance tests of page up/down key navigation

Page up/down in textarea with lots of line w/o spellcheck is slow.

These test creates a textarea w/o spellcheck and insert 20000 lines.
Then, exec page up/down command at the bottom of the textarea.

BUG=692379
==========

[yoichio, 2017-02-15 07:38:18]

yoichio@chromium.org changed reviewers:
+ yosin@chromium.org

[yosin_UTC9, 2017-02-15 08:00:50]

lgtm

Should we have spellcheck=true version? 
Are spellcheck=true and spellcheck=false different?

[yoichio, 2017-02-15 08:49:07]

The CQ bit was checked by yoichio@chromium.org

[commit-bot: I haz the power, 2017-02-15 08:49:16]

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, 2017-02-15 10:00:46]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1487148547129640,
"parent_rev": "e2fc74b70d6ea11c08c6df1ef2b1372eccc5385f", "commit_rev":
"2951b0dfa47f9b19c0ed36c383a0f131df0d23c3"}

[commit-bot: I haz the power, 2017-02-15 10:01:21]

Description was changed from

==========
Add performance tests of page up/down key navigation

Page up/down in textarea with lots of line w/o spellcheck is slow.

These test creates a textarea w/o spellcheck and insert 20000 lines.
Then, exec page up/down command at the bottom of the textarea.

BUG=692379
==========

to

==========
Add performance tests of page up/down key navigation

Page up/down in textarea with lots of line w/o spellcheck is slow.

These test creates a textarea w/o spellcheck and insert 20000 lines.
Then, exec page up/down command at the bottom of the textarea.

BUG=692379

Review-Url: https://codereview.chromium.org/2696133002
Cr-Commit-Position: refs/heads/master@{#450648}
Committed:
https://chromium.googlesource.com/chromium/src/+/2951b0dfa47f9b19c0ed36c383a0...
==========

[commit-bot: I haz the power, 2017-02-15 10:01:23]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/chromium/src/+/2951b0dfa47f9b19c0ed36c383a0...