Measure how often PSL and same-organization name credentials are suppressed.

Measure how often PSL and same-organization name credentials are suppressed.

To this end, the SuppressedHTTPSFormFetcher is extended into the
SuppressedFormFetcher, which now fetches the two new kinds of suppressed
credentials as well; and makes them available through the FormFetcher interface
to PasswordFormManager, which ultimately records the histograms.

BUG=720599
Review-Url: https://codereview.chromium.org/2912783002
Cr-Original-Commit-Position: refs/heads/master@{#475561}
Review-Url: https://codereview.chromium.org/2920793002 .
Cr-Commit-Position: refs/branch-heads/3112@{#86}
Cr-Branched-From: b6460e24cf59f429d69de255538d0fc7a425ccf9-refs/heads/master@{#474897}
Committed: https://chromium.googlesource.com/chromium/src/+/8c990cc2de3ac6475dab972b1baa6fd1f41c6f0d

[engedy, 2017-06-01 12:35:43]

Description was changed from

==========
Measure how often PSL and same-organization name credentials are suppressed.

To this end, the SuppressedHTTPSFormFetcher is extended into the
SuppressedFormFetcher, which now fetches the two new kinds of suppressed
credentials as well; and makes them available through the FormFetcher interface
to PasswordFormManager, which ultimately records the histograms.

BUG=720599

Review-Url: https://codereview.chromium.org/2912783002
Cr-Commit-Position: refs/heads/master@{#475561}
(cherry picked from commit e373a531ac62344a5fe43c81e9511bc0df495c3d)
==========

to

==========
Measure how often PSL and same-organization name credentials are suppressed.

To this end, the SuppressedHTTPSFormFetcher is extended into the
SuppressedFormFetcher, which now fetches the two new kinds of suppressed
credentials as well; and makes them available through the FormFetcher interface
to PasswordFormManager, which ultimately records the histograms.

BUG=720599

Review-Url: https://codereview.chromium.org/2912783002
Cr-Original-Commit-Position: refs/heads/master@{#475561}
Review-Url: https://codereview.chromium.org/2920793002 .
Cr-Commit-Position: refs/branch-heads/3112@{#86}
Cr-Branched-From:
b6460e24cf59f429d69de255538d0fc7a425ccf9-refs/heads/master@{#474897}
Committed:
https://chromium.googlesource.com/chromium/src/+/8c990cc2de3ac6475dab972b1baa...
==========

[engedy, 2017-06-01 12:35:44]

Committed patchset #1 (id:1) manually as
8c990cc2de3ac6475dab972b1baa6fd1f41c6f0d.