The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/728c5027f96edd1203c61c7683a419288830f7a6

commit 728c5027f96edd1203c61c7683a419288830f7a6
Author: dominickn <dominickn@chromium.org>
Date: Tue Apr 04 09:14:15 2017

Implement permissions embargo for prompts which are repeatedly ignored.

This CL implements embargoing when permission prompts for an (origin,
permission) pair are ignored 4 times in a row by users.

BUG= 706726 

Review-Url: https://codereview.chromium.org/2790493002
Cr-Commit-Position: refs/heads/master@{#461667}

[modify] https://crrev.com/728c5027f96edd1203c61c7683a419288830f7a6/chrome/browser/browsing_data/chrome_browsing_data_remover_delegate_unittest.cc
[modify] https://crrev.com/728c5027f96edd1203c61c7683a419288830f7a6/chrome/browser/permissions/permission_context_base.cc
[modify] https://crrev.com/728c5027f96edd1203c61c7683a419288830f7a6/chrome/browser/permissions/permission_decision_auto_blocker.cc
[modify] https://crrev.com/728c5027f96edd1203c61c7683a419288830f7a6/chrome/browser/permissions/permission_decision_auto_blocker.h
[modify] https://crrev.com/728c5027f96edd1203c61c7683a419288830f7a6/chrome/browser/permissions/permission_decision_auto_blocker_unittest.cc
[modify] https://crrev.com/728c5027f96edd1203c61c7683a419288830f7a6/chrome/browser/permissions/permission_infobar_delegate.cc
[modify] https://crrev.com/728c5027f96edd1203c61c7683a419288830f7a6/chrome/browser/permissions/permission_request_impl.cc
[modify] https://crrev.com/728c5027f96edd1203c61c7683a419288830f7a6/chrome/browser/permissions/permission_result.h
[modify] https://crrev.com/728c5027f96edd1203c61c7683a419288830f7a6/chrome/browser/permissions/permission_uma_util.cc
[modify] https://crrev.com/728c5027f96edd1203c61c7683a419288830f7a6/chrome/browser/permissions/permission_uma_util.h
[modify] https://crrev.com/728c5027f96edd1203c61c7683a419288830f7a6/chrome/common/chrome_features.cc
[modify] https://crrev.com/728c5027f96edd1203c61c7683a419288830f7a6/chrome/common/chrome_features.h
[modify] https://crrev.com/728c5027f96edd1203c61c7683a419288830f7a6/tools/metrics/histograms/histograms.xml