Sorry for my ignorance, but what is video persistence?

Re #2: Talked offline and resolved

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/9bab651a8a170a6016af11dc0ee4f6407456fcb9

commit 9bab651a8a170a6016af11dc0ee4f6407456fcb9
Author: mlamouri <mlamouri@chromium.org>
Date: Tue Mar 21 13:23:04 2017

Record the type of controls used for video persistence.

BUG= 703267 
R=zqzhang@chromium.org

Review-Url: https://codereview.chromium.org/2763723002
Cr-Commit-Position: refs/heads/master@{#458387}

[modify] https://crrev.com/9bab651a8a170a6016af11dc0ee4f6407456fcb9/third_party/WebKit/Source/core/html/HTMLMediaElement.cpp
[modify] https://crrev.com/9bab651a8a170a6016af11dc0ee4f6407456fcb9/tools/metrics/histograms/histograms.xml

Your change meets the bar and is auto-approved for M58. Please go ahead and merge the CL to branch 3029 manually. Please contact milestone owner if you have questions.
Owners: amineer@(Android), cmasso@(iOS), bhthompson@(ChromeOS), govind@(Desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/1a50efc6d0e39da9a6fb4e806828fd89890851c9

commit 1a50efc6d0e39da9a6fb4e806828fd89890851c9
Author: Mounir Lamouri <mlamouri@chromium.org>
Date: Wed Mar 22 16:55:41 2017

Record the type of controls used for video persistence.

BUG= 703267 
R=zqzhang@chromium.org

Review-Url: https://codereview.chromium.org/2763723002
Cr-Commit-Position: refs/heads/master@{#458387}
(cherry picked from commit 9bab651a8a170a6016af11dc0ee4f6407456fcb9)

Review-Url: https://codereview.chromium.org/2770513003 .
Cr-Commit-Position: refs/branch-heads/3029@{#358}
Cr-Branched-From: 939b32ee5ba05c396eef3fd992822fcca9a2e262-refs/heads/master@{#454471}

[modify] https://crrev.com/1a50efc6d0e39da9a6fb4e806828fd89890851c9/third_party/WebKit/Source/core/html/HTMLMediaElement.cpp
[modify] https://crrev.com/1a50efc6d0e39da9a6fb4e806828fd89890851c9/tools/metrics/histograms/histograms.xml