ListPicker calculate accurate scroll height

ListPicker calculate accurate scroll height

The vertical scrollbar was being displayed when it shouldn't be because the scroll dimensions would be fractional values and we hasVerticalScrollbar was returning false negatives. Element.scrollHeight returns the floored value so this CL calculates the fractional scroll height using getBoundingClientRect which returns fractional values.

BUG=470505
TEST=Added popup-menu-appearance-fractional-width.html

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=192924

[keishi, 2015-03-31 04:38:14]

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

[tkent, 2015-03-31 04:48:59]

The CQ bit was checked by tkent@chromium.org

[tkent, 2015-03-31 04:49:01]

lgtm

[commit-bot: I haz the power, 2015-03-31 04:51:26]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1042733002/20001

[keishi, 2015-03-31 04:57:20]

The CQ bit was checked by keishi@chromium.org

[keishi, 2015-03-31 04:57:20]

The patchset sent to the CQ was uploaded after l-g-t-m from tkent@chromium.org
Link to the patchset: https://codereview.chromium.org/1042733002/#ps40001
(title: "Fixed test name")

[commit-bot: I haz the power, 2015-03-31 04:57:29]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1042733002/40001

[commit-bot: I haz the power, 2015-03-31 08:23:17]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-03-31 08:23:18]

Try jobs failed on following builders:
  linux_blink_rel on tryserver.blink (JOB_FAILED,
http://build.chromium.org/p/tryserver.blink/builders/linux_blink_rel/builds/5...)

[keishi, 2015-04-01 05:25:22]

The CQ bit was checked by keishi@chromium.org

[keishi, 2015-04-01 05:25:23]

The patchset sent to the CQ was uploaded after l-g-t-m from tkent@chromium.org
Link to the patchset: https://codereview.chromium.org/1042733002/#ps80001
(title: "Fixe problem with scrollHeight calculation when hidden options and no
options")

[commit-bot: I haz the power, 2015-04-01 05:25:57]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1042733002/80001

[commit-bot: I haz the power, 2015-04-01 11:29:39]

Committed patchset #5 (id:80001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=192924