[telemetry] Fix bug in form_based_credentials_backend

[telemetry] Fix bug in form_based_credentials_backend

During refactor in CL: https://codereview.chromium.org/2615943003
a bug was introduced in form_based_credentials_backend module that
prevented it from finding the login form by it's CSS id.

TBR=nednguyen@google.com
BUG=chromium:679518
Review-Url: https://codereview.chromium.org/2625653002
Committed: https://chromium.googlesource.com/external/github.com/catapult-project/catapult/+/f1ec9eb8cd1564cc3b2e4cc06720d84fe46f9c91

[perezju, 2017-01-10 11:29:58]

Description was changed from

==========
[telemetry] Fix bug in form_based_credentials_backend

During refactor in CL: https://codereview.chromium.org/2615943003
a bug was introduced in form_based_credentials_backend module that
prevented it from finding the login form by it's CSS id.

BUG=chromium:679518
==========

to

==========
[telemetry] Fix bug in form_based_credentials_backend

During refactor in CL: https://codereview.chromium.org/2615943003
a bug was introduced in form_based_credentials_backend module that
prevented it from finding the login form by it's CSS id.

TBR=nednguyen@google.com
BUG=chromium:679518
==========

[perezju, 2017-01-10 11:29:58]

perezju@chromium.org changed reviewers:
+ nednguyen@google.com

[perezju, 2017-01-10 11:30:03]

The CQ bit was checked by perezju@chromium.org

[commit-bot: I haz the power, 2017-01-10 11:30:12]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-01-10 11:53:04]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1484047803352360, "parent_rev":
"0c217fe8765ca4102cb770031fb18334979ac0c9", "commit_rev":
"f1ec9eb8cd1564cc3b2e4cc06720d84fe46f9c91"}

[commit-bot: I haz the power, 2017-01-10 11:53:08]

Description was changed from

==========
[telemetry] Fix bug in form_based_credentials_backend

During refactor in CL: https://codereview.chromium.org/2615943003
a bug was introduced in form_based_credentials_backend module that
prevented it from finding the login form by it's CSS id.

TBR=nednguyen@google.com
BUG=chromium:679518
==========

to

==========
[telemetry] Fix bug in form_based_credentials_backend

During refactor in CL: https://codereview.chromium.org/2615943003
a bug was introduced in form_based_credentials_backend module that
prevented it from finding the login form by it's CSS id.

TBR=nednguyen@google.com
BUG=chromium:679518

Review-Url: https://codereview.chromium.org/2625653002
Committed:
https://chromium.googlesource.com/external/github.com/catapult-project/catapu...
==========

[commit-bot: I haz the power, 2017-01-10 11:53:09]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/external/github.com/catapult-project/catapu...