In previous implementation, if the server does the more than one server redirects, we only record t…

In previous implementation, if the server does the more than one server redirects, we only record the original request url and the final url (after all server-redirects). Per Bineval team's request, this CL adds all the server redirect urls (including intermediate ones) to download pings. This is because these intermediate server redirects might be used as signal to identify certain malware/UwS campaigns.

Add two histograms to count # of NavigationEvents and
the memory usage.

Also, fix a bug that causes duplicating IP addresses.

BUG=680238
Review-Url: https://codereview.chromium.org/2644133005
Cr-Commit-Position: refs/heads/master@{#447382}
(cherry picked from commit de82ac84d9c24e3910cfc4c20d81d94bfca48943)

Review-Url: https://codereview.chromium.org/2686773002 .
Cr-Commit-Position: refs/branch-heads/2987@{#376}
Cr-Branched-From: ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed: https://chromium.googlesource.com/chromium/src/+/07d6f63e7843d776ecdfc3b0ce645b0b8e080f8b

[Jialiu Lin, 2017-02-08 01:48:46]

Description was changed from

==========
In previous implementation, if the server does the more than one server
redirects, we only record the original request url and the final url (after all
server-redirects). Per Bineval team's request, this CL adds all the server
redirect urls (including intermediate ones) to download pings. This is because
these intermediate server redirects might be used as signal to identify certain
malware/UwS campaigns.

Add two histograms to count # of NavigationEvents and
the memory usage.

Also, fix a bug that causes duplicating IP addresses.

BUG=680238

Review-Url: https://codereview.chromium.org/2644133005
Cr-Commit-Position: refs/heads/master@{#447382}
(cherry picked from commit de82ac84d9c24e3910cfc4c20d81d94bfca48943)
==========

to

==========
In previous implementation, if the server does the more than one server
redirects, we only record the original request url and the final url (after all
server-redirects). Per Bineval team's request, this CL adds all the server
redirect urls (including intermediate ones) to download pings. This is because
these intermediate server redirects might be used as signal to identify certain
malware/UwS campaigns.

Add two histograms to count # of NavigationEvents and
the memory usage.

Also, fix a bug that causes duplicating IP addresses.

BUG=680238

Review-Url: https://codereview.chromium.org/2644133005
Cr-Commit-Position: refs/heads/master@{#447382}
(cherry picked from commit de82ac84d9c24e3910cfc4c20d81d94bfca48943)

Review-Url: https://codereview.chromium.org/2686773002 .
Cr-Commit-Position: refs/branch-heads/2987@{#376}
Cr-Branched-From:
ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed:
https://chromium.googlesource.com/chromium/src/+/07d6f63e7843d776ecdfc3b0ce64...
==========

[Jialiu Lin, 2017-02-08 01:48:47]

Committed patchset #1 (id:1) manually as
07d6f63e7843d776ecdfc3b0ce645b0b8e080f8b.