Simplifed logic of showing/hiding cancel buttons on login screens.

Simplifed logic of showing/hiding cancel buttons on login screens.

Screens doesn't rely on HeaderBar to make decisions about showing cancel buttons
anymore. Also removed 'cancel add users' header bar button, as it is not used
in the new UI.

BUG=484514
Committed: https://crrev.com/383b976cead80366f776cb67df1f29874c41c238
Cr-Commit-Position: refs/heads/master@{#355964}

[dzhioev (left Google), 2015-10-24 04:19:11]

The CQ bit was checked by dzhioev@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-10-24 04:19:27]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1411423006/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1411423006/1

[commit-bot: I haz the power, 2015-10-24 04:40:11]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-10-24 04:40:12]

Dry run: This issue passed the CQ dry run.

[dzhioev (left Google), 2015-10-24 05:03:24]

The CQ bit was checked by dzhioev@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-10-24 05:03:31]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1411423006/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1411423006/20001

[dzhioev (left Google), 2015-10-24 05:04:52]

dzhioev@chromium.org changed reviewers:
+ alemate@chromium.org

[dzhioev (left Google), 2015-10-24 05:04:52]

Hi, PTAL

[Alexander Alekseev, 2015-10-24 05:09:33]

https://codereview.chromium.org/1411423006/diff/20001/chrome/browser/resource...
File
chrome/browser/resources/chromeos/login/screen_supervised_user_creation.html
(right):

https://codereview.chromium.org/1411423006/diff/20001/chrome/browser/resource...
chrome/browser/resources/chromeos/login/screen_supervised_user_creation.html:1:
<link rel="import" href="chrome://oobe/custom_elements.html">
Why do you need to change this file?

https://codereview.chromium.org/1411423006/diff/20001/chrome/browser/resource...
File chrome/browser/resources/chromeos/login/screen_supervised_user_creation.js
(right):

https://codereview.chromium.org/1411423006/diff/20001/chrome/browser/resource...
chrome/browser/resources/chromeos/login/screen_supervised_user_creation.js:1104:
'error'];
?

[commit-bot: I haz the power, 2015-10-24 05:23:22]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-10-24 05:23:23]

Dry run: This issue passed the CQ dry run.

[dzhioev (left Google), 2015-10-24 06:13:53]

https://codereview.chromium.org/1411423006/diff/20001/chrome/browser/resource...
File
chrome/browser/resources/chromeos/login/screen_supervised_user_creation.html
(right):

https://codereview.chromium.org/1411423006/diff/20001/chrome/browser/resource...
chrome/browser/resources/chromeos/login/screen_supervised_user_creation.html:1:
<link rel="import" href="chrome://oobe/custom_elements.html">
On 2015/10/24 05:09:33, Alexander Alekseev wrote:
> Why do you need to change this file?

Just added several newlines to visually divide different steps in HTML code.
Some of them were divided, and others weren't. Fixed that.

https://codereview.chromium.org/1411423006/diff/20001/chrome/browser/resource...
File chrome/browser/resources/chromeos/login/screen_supervised_user_creation.js
(right):

https://codereview.chromium.org/1411423006/diff/20001/chrome/browser/resource...
chrome/browser/resources/chromeos/login/screen_supervised_user_creation.js:1104:
'error'];
On 2015/10/24 05:09:33, Alexander Alekseev wrote:
> ?
Same order as in HTML. Doesn't really change anything.

[Alexander Alekseev, 2015-10-24 06:41:04]

The CQ bit was checked by alemate@chromium.org

[Alexander Alekseev, 2015-10-24 06:41:04]

lgtm

[commit-bot: I haz the power, 2015-10-24 06:41:13]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1411423006/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1411423006/20001

[commit-bot: I haz the power, 2015-10-24 06:45:48]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-10-24 06:46:50]

Patchset 2 (id:??) landed as
https://crrev.com/383b976cead80366f776cb67df1f29874c41c238
Cr-Commit-Position: refs/heads/master@{#355964}