Add const-specifier to DeviceDisplayInfo getters.

Add const-specifier to DeviceDisplayInfo getters.

Breaking out a small part of
https://codereview.chromium.org/1409833004/

BUG=310763
Committed: https://crrev.com/08232709a592a12a0b5537f00d3e5d198777eece
Cr-Commit-Position: refs/heads/master@{#364521}

[gsennton, 2015-12-10 11:43:25]

gsennton@chromium.org changed reviewers:
+ aelias@chromium.org

[gsennton, 2015-12-10 11:43:26]

Tiny change, just trying to simplify https://codereview.chromium.org/1409833004/
by breaking this out :)

ptal

[aelias_OOO_until_Jul13, 2015-12-10 19:37:15]

lgtm

[gsennton, 2015-12-10 19:42:08]

The CQ bit was checked by gsennton@chromium.org

[commit-bot: I haz the power, 2015-12-10 19:43:13]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1505993009/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1505993009/1

[commit-bot: I haz the power, 2015-12-10 23:30:50]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-12-10 23:31:54]

Description was changed from

==========
Add const-specifier to DeviceDisplayInfo getters.

Breaking out a small part of
https://codereview.chromium.org/1409833004/

BUG=310763
==========

to

==========
Add const-specifier to DeviceDisplayInfo getters.

Breaking out a small part of
https://codereview.chromium.org/1409833004/

BUG=310763

Committed: https://crrev.com/08232709a592a12a0b5537f00d3e5d198777eece
Cr-Commit-Position: refs/heads/master@{#364521}
==========

[commit-bot: I haz the power, 2015-12-10 23:31:54]

Patchset 1 (id:??) landed as
https://crrev.com/08232709a592a12a0b5537f00d3e5d198777eece
Cr-Commit-Position: refs/heads/master@{#364521}