Update typesetting features when letter-spacing is changed.

Update typesetting features when letter-spacing is changed.

The typesetting features depend on letter-spacing, yet we don't call
updateTypesettingFeatures when letter-spacing is set. This causes ligatures
to incorrectly remain enabled for non-zero letter-spacing when font-variant-
ligatures is used.

R=dglazkov@chromium.org
BUG=448048
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=188331

[Stephen Chennney, 2015-01-12 16:07:05]

schenney@chromium.org changed reviewers:
+ eae@chromium.org, fmalita@chromium.org, jbroman@chromium.org

[jbroman, 2015-01-13 16:10:42]

lgtm

[jbroman, 2015-01-13 16:11:10]

On 2015/01/13 16:10:42, jbroman wrote:
> lgtm

(but I'm not an OWNER, so you'll need another)

[Dominik Röttsches, 2015-01-13 16:27:09]

LGTM, thanks!

[eae, 2015-01-13 16:30:59]

The CQ bit was checked by eae@chromium.org

[commit-bot: I haz the power, 2015-01-13 16:31:43]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/847813002/1

[commit-bot: I haz the power, 2015-01-13 19:18:25]

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

[commit-bot: I haz the power, 2015-01-13 19:18:26]

Try jobs failed on following builders:
  linux_blink_dbg on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/linux_blink_dbg/builds/4...)

[andersr, 2015-01-13 21:23:59]

The CQ bit was checked by andersr@opera.com

[commit-bot: I haz the power, 2015-01-13 21:24:41]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/847813002/1

[commit-bot: I haz the power, 2015-01-13 22:39:36]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=188331