Fix PassphraseTextfield::OnFocus

Fix PassphraseTextfield::OnFocus

A changed to Textfield broke OnFocus/OnBlur behavior of PassphraseTextfield.
This provides an expedient fix until the class is deprecated completely.

BUG=378914
TBR=kevers@chromium.org, msw@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=274076

[stevenjb, 2014-05-30 23:54:44]

I'm going to run this through the CQ so we get it in over the weekend and it can
make the first Dev channel update.

[stevenjb, 2014-05-30 23:54:48]

The CQ bit was checked by stevenjb@chromium.org

[commit-bot: I haz the power, 2014-05-31 00:00:46]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/stevenjb@chromium.org/308933002/1

[msw, 2014-05-31 00:19:08]

I guess this lgtm, but really, this should be reviewed by Shu Chen, Oshima, and
Kevers (the offending r270818 author and reviewers), and perhaps Yuki (for input
method interaction). Also, it'd be nice if this textfield sublass were removed,
since it doesn't seem to do much more than set the text on a password Textfield
to some placeholder.

[commit-bot: I haz the power, 2014-05-31 05:04:14]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  win_chromium_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/win_chromium_rel/buil...)

[commit-bot: I haz the power, 2014-05-31 22:35:47]

Change committed as 274076

[stevenjb, 2014-06-02 15:14:15]

On 2014/05/31 00:19:08, msw wrote:
> I guess this lgtm, but really, this should be reviewed by Shu Chen, Oshima,
and
> Kevers (the offending r270818 author and reviewers), and perhaps Yuki (for
input
> method interaction). Also, it'd be nice if this textfield sublass were
removed,
> since it doesn't seem to do much more than set the text on a password
Textfield
> to some placeholder.

I'm working hard to deprecate the network connect dialogs and this class
entirely.