[Merge to M-58] [Password Manager] Fix saving for accounts.google.com.

[Merge to M-58] [Password Manager] Fix saving for accounts.google.com.

Saving on accounts.google.com doesn't work, the reasons are the following:

The sign-in form is loaded on https://accounts.google.com/ServiceLogin, but then when the submission is done, url is https://accounts.google.com/signin/v2/challenge/pwd , so loaded form and the submitted form are considered as different forms, and the Password Manager thinks that the submitted form was not seen during adding to DOM, and such forms are skipped since Password Manager can't fill forms that can't be seen (and no point to save password, that can't be filled). But this is legitimate site behaviour

This CL implements checking whether loaded and submitted forms come from the same frame (a frame is represented with a driver in Password Manager code).

BUG=699097
Review-Url: https://codereview.chromium.org/2740523002
Cr-Commit-Position: refs/heads/master@{#456674}
(cherry picked from commit 411333039edf0a1cfa7ecd505a979af3015545f2)

Review-Url: https://codereview.chromium.org/2760883002 .
Cr-Commit-Position: refs/branch-heads/3029@{#293}
Cr-Branched-From: 939b32ee5ba05c396eef3fd992822fcca9a2e262-refs/heads/master@{#454471}
Committed: https://chromium.googlesource.com/chromium/src/+/5083384086d0a831786ccd7c6a9ee55d4ca85ef3

[dvadym, 2017-03-20 11:59:50]

Description was changed from

==========
[Merge to M-58] [Password Manager] Fix saving for accounts.google.com.

Saving on accounts.google.com doesn't work, the reasons are the following:

The sign-in form is loaded on https://accounts.google.com/ServiceLogin, but then
when the submission is done, url is
https://accounts.google.com/signin/v2/challenge/pwd , so loaded form and the
submitted form are considered as different forms, and the Password Manager
thinks that the submitted form was not seen during adding to DOM, and such forms
are skipped since Password Manager can't fill forms that can't be seen (and no
point to save password, that can't be filled). But this is legitimate site
behaviour

This CL implements checking whether loaded and submitted forms come from the
same frame (a frame is represented with a driver in Password Manager code).

BUG=699097

Review-Url: https://codereview.chromium.org/2740523002
Cr-Commit-Position: refs/heads/master@{#456674}
(cherry picked from commit 411333039edf0a1cfa7ecd505a979af3015545f2)
==========

to

==========
[Merge to M-58] [Password Manager] Fix saving for accounts.google.com.

Saving on accounts.google.com doesn't work, the reasons are the following:

The sign-in form is loaded on https://accounts.google.com/ServiceLogin, but then
when the submission is done, url is
https://accounts.google.com/signin/v2/challenge/pwd , so loaded form and the
submitted form are considered as different forms, and the Password Manager
thinks that the submitted form was not seen during adding to DOM, and such forms
are skipped since Password Manager can't fill forms that can't be seen (and no
point to save password, that can't be filled). But this is legitimate site
behaviour

This CL implements checking whether loaded and submitted forms come from the
same frame (a frame is represented with a driver in Password Manager code).

BUG=699097

Review-Url: https://codereview.chromium.org/2740523002
Cr-Commit-Position: refs/heads/master@{#456674}
(cherry picked from commit 411333039edf0a1cfa7ecd505a979af3015545f2)

Review-Url: https://codereview.chromium.org/2760883002 .
Cr-Commit-Position: refs/branch-heads/3029@{#293}
Cr-Branched-From:
939b32ee5ba05c396eef3fd992822fcca9a2e262-refs/heads/master@{#454471}
Committed:
https://chromium.googlesource.com/chromium/src/+/5083384086d0a831786ccd7c6a9e...
==========

[dvadym, 2017-03-20 11:59:52]

Committed patchset #1 (id:1) manually as
5083384086d0a831786ccd7c6a9ee55d4ca85ef3.