Files.app: Add a check for uninitialized list view.

Files.app: Add a check for uninitialized list view.

The check is needed in relayout method of FileManagerUI.
The list view may be not initialized.

BUG=432025
TEST=None

Committed: https://crrev.com/ed2ca7c12653002df2729bd190a52df48a992895
Cr-Commit-Position: refs/heads/master@{#303607}

[hirono, 2014-11-11 07:10:20]

hirono@chromium.org changed reviewers:
+ fukino@chromium.org

[hirono, 2014-11-11 07:10:20]

PTAL the CL? Thanks!

[fukino, 2014-11-11 07:15:29]

On 2014/11/11 07:10:20, hirono wrote:
> PTAL the CL? Thanks!

lgtm!

[hirono, 2014-11-11 07:30:12]

The CQ bit was checked by hirono@chromium.org

[hirono, 2014-11-11 07:30:18]

On 2014/11/11 07:15:29, fukino wrote:
> On 2014/11/11 07:10:20, hirono wrote:
> > PTAL the CL? Thanks!
> 
> lgtm!

Thanks!

[commit-bot: I haz the power, 2014-11-11 07:30:44]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/712323002/1

[commit-bot: I haz the power, 2014-11-11 08:16:10]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-11-11 08:16:46]

Patchset 1 (id:??) landed as
https://crrev.com/ed2ca7c12653002df2729bd190a52df48a992895
Cr-Commit-Position: refs/heads/master@{#303607}