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In preparation for an EV study, metrics from PageInfo actions need to
be separate for SECURE sites and EV_SECURE sites. This CL deprecates
the Security.PageInfo.Action.HttpsUrl.Valid histogram and creates
Security.PageInfo.Action.HttpsUrl.ValidEV and
Security.PageInfo.Action.HttpsUrl.ValidNonEV.

Bug: 803530
Change-Id: I0e28b0ac7b53d3838cb74b61d10662d9d446fd18
Reviewed-on: https://chromium-review.googlesource.com/896184Reviewed-by: Emily Stark <estark@chromium.org>
Reviewed-by: Gayane Petrosyan <gayane@chromium.org>
Commit-Queue: Carlos IL <carlosil@chromium.org>
Cr-Commit-Position: refs/heads/master@{#533732}