Add const to GamepadEvent functions

Add const to GamepadEvent functions

Gamepad event functions wll be marked const. Otherise it's not
usable when it is passed by const reference.

BUG=717246
TEST=Build and test with local gamepad client

Review-Url: https://codereview.chromium.org/2879993002
Cr-Commit-Position: refs/heads/master@{#471822}
Committed: https://chromium.googlesource.com/chromium/src/+/53276c7f011db2dde25d373ccbd45f2735ceef3c

[jkwang, 2017-05-12 23:14:58]

Description was changed from

==========
Add const to GamepadEvent functions

Gamepad event functions wll be marked const. Otherise it's not
usable when it is passed by const reference.

BUG=717246
TEST=Build and test with local gamepad client
==========

to

==========
Add const to GamepadEvent functions

Gamepad event functions wll be marked const. Otherise it's not
usable when it is passed by const reference.

BUG=717246
TEST=Build and test with local gamepad client
==========

[jkwang, 2017-05-12 23:14:58]

jkwang@google.com changed reviewers:
+ spang@chromium.org

[spang, 2017-05-15 17:04:13]

lgtm

[jkwang, 2017-05-15 17:28:31]

The CQ bit was checked by jkwang@google.com

[commit-bot: I haz the power, 2017-05-15 17:29:07]

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, 2017-05-15 17:52:01]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1494869311873800, "parent_rev":
"026d7180490c04de18c2327e1d5e1912f4177042", "commit_rev":
"53276c7f011db2dde25d373ccbd45f2735ceef3c"}

[commit-bot: I haz the power, 2017-05-15 17:52:09]

Description was changed from

==========
Add const to GamepadEvent functions

Gamepad event functions wll be marked const. Otherise it's not
usable when it is passed by const reference.

BUG=717246
TEST=Build and test with local gamepad client
==========

to

==========
Add const to GamepadEvent functions

Gamepad event functions wll be marked const. Otherise it's not
usable when it is passed by const reference.

BUG=717246
TEST=Build and test with local gamepad client

Review-Url: https://codereview.chromium.org/2879993002
Cr-Commit-Position: refs/heads/master@{#471822}
Committed:
https://chromium.googlesource.com/chromium/src/+/53276c7f011db2dde25d373ccbd4...
==========

[commit-bot: I haz the power, 2017-05-15 17:52:10]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/53276c7f011db2dde25d373ccbd4...