Make OnDeviceEvent and OnDispatcherListChanged protected to allow overload.

Make OnDeviceEvent and OnDispatcherListChanged protected to allow overload.

Only one event factory can exist. Make OnDeviceEvent/ OnDispatcherListChanged
protected will allow to overload this implementation to add specific behaviour
to the evdev input devices one.
Add lgenevet@cisco.com in authors.

Committed: https://crrev.com/59b25316ccb65952c04477ced23b9b40aac4a383
Cr-Commit-Position: refs/heads/master@{#302119}

[Lidwine, 2014-10-30 17:04:44]

lgenevet@cisco.com changed reviewers:
+ spang@chromium.org

[Lidwine, 2014-10-30 17:07:17]

On 2014/10/30 17:04:44, Lidwine wrote:
> mailto:lgenevet@cisco.com changed reviewers:
> + mailto:spang@chromium.org

Resubmit with correct account (lgenevet@cisco.com).
Initial review https://codereview.chromium.org/687523002.

[spang, 2014-10-30 18:01:40]

The CQ bit was checked by spang@chromium.org

[spang, 2014-10-30 18:01:41]

lgtm

[commit-bot: I haz the power, 2014-10-30 18:03:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/689933004/1

[commit-bot: I haz the power, 2014-10-30 18:50:41]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-10-30 18:51:17]

Patchset 1 (id:??) landed as
https://crrev.com/59b25316ccb65952c04477ced23b9b40aac4a383
Cr-Commit-Position: refs/heads/master@{#302119}