Make some arguments of FocusController functions references.

Make some arguments of FocusController functions references.

We can remove unnecessary assertions and runtime null checks by this change.

BUG=
TEST=none; No behavior changes.

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=184893

[tkent, 2014-11-06 03:05:09]

tkent@chromium.org changed reviewers:
+ hayato@chromium.org, kochi@chromium.org

[tkent, 2014-11-06 03:05:09]

Kochi-san or Hayato-san, would you review this please?

[kochi, 2014-11-06 03:59:02]

lgtm

[tkent, 2014-11-06 04:02:38]

The CQ bit was checked by tkent@chromium.org

[commit-bot: I haz the power, 2014-11-06 04:02:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/704963002/1

[commit-bot: I haz the power, 2014-11-06 04:04:52]

Committed patchset #1 (id:1) as 184893

[hayato, 2014-11-10 08:24:41]

hayato@chromium.org changed reviewers:
+ tasak@google.com
- hayato@chromium.org