Do not use title attribute in Files app.

Do not use title attribute in Files app.

We use aria-title instead. This CL renames the cloud import title attributes
with aria-title.

TEST=Tested with dev tools manually.
BUG=None

Committed: https://crrev.com/9d291c30bd9380b92b872a7af8825278aa9cee75
Cr-Commit-Position: refs/heads/master@{#337362}

[mtomasz, 2015-07-06 01:06:01]

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

[mtomasz, 2015-07-06 01:06:11]

@hirono: PTAL. Thanks.

[hirono, 2015-07-06 03:06:03]

On 2015/07/06 01:06:11, mtomasz wrote:
> @hirono: PTAL. Thanks.

Can we show tooltips with area-labels? Maybe we need to specify both.

[mtomasz, 2015-07-06 03:20:12]

On 2015/07/06 03:06:03, hirono wrote:
> On 2015/07/06 01:06:11, mtomasz wrote:
> > @hirono: PTAL. Thanks.
> 
> Can we show tooltips with area-labels? Maybe we need to specify both.

Tooltips for aria-label are coming in a separate CL:
https://codereview.chromium.org/1223693002/

Using label attribute would show the native ones, which we don't want.

[hirono, 2015-07-06 04:16:03]

lgtm!

[mtomasz, 2015-07-06 04:20:21]

The CQ bit was checked by mtomasz@chromium.org

[commit-bot: I haz the power, 2015-07-06 04:20:27]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1215733005/1

[commit-bot: I haz the power, 2015-07-06 04:23:33]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-07-06 04:24:33]

Patchset 1 (id:??) landed as
https://crrev.com/9d291c30bd9380b92b872a7af8825278aa9cee75
Cr-Commit-Position: refs/heads/master@{#337362}