Small fix for touch screen on Linux with or without flag --touch-devices

Small fix for touch screen on Linux with or without flag --touch-devices

This is a small fix, missing a pair of brackets of "if" statement for
issue 1186833005: Fix touch screen on Linux with or without flag --touch-devices
(https://codereview.chromium.org/1186833005/)

BUG=486492
Committed: https://crrev.com/db63904ab567209e4318a81d440f183686418b77
Cr-Commit-Position: refs/heads/master@{#338553}

[lanwei, 2015-07-13 18:37:40]

lanwei@chromium.org changed reviewers:
+ sadrul@chromium.org

[sadrul, 2015-07-13 18:54:24]

lgtm

Hm, we should probably require running 'git cl format' for CLs

[lanwei, 2015-07-13 19:00:15]

On 2015/07/13 18:54:24, sadrul wrote:
> lgtm
> 
> Hm, we should probably require running 'git cl format' for CLs

Thanks, I will keep that in mind, good way to check both format and grammar
errors.

[lanwei, 2015-07-13 19:00:28]

The CQ bit was checked by lanwei@chromium.org

[commit-bot: I haz the power, 2015-07-13 19:02:35]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1230353002/1

[commit-bot: I haz the power, 2015-07-13 19:54:25]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-07-13 19:55:35]

Patchset 1 (id:??) landed as
https://crrev.com/db63904ab567209e4318a81d440f183686418b77
Cr-Commit-Position: refs/heads/master@{#338553}