WIP at https://codereview.chromium.org/2971903004/

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/fc66d403f38d98af325adb7376e342ad37acc8e1

commit fc66d403f38d98af325adb7376e342ad37acc8e1
Author: beaufort.francois <beaufort.francois@gmail.com>
Date: Mon Jul 17 09:26:22 2017

Fix vertical overflow in about:media-internals

BUG= 739670 

Review-Url: https://codereview.chromium.org/2971903004
Cr-Commit-Position: refs/heads/master@{#487032}

[modify] https://crrev.com/fc66d403f38d98af325adb7376e342ad37acc8e1/content/browser/resources/media/media_internals.css

Tested the issue using #61.0.3163.13 on Win 10 and Linux Ubuntu 14.04. Observed the issue is working as expected.

Tested the same using #61.0.3163.13 on Mac 10.12.5 and still able to scroll even on empty page.

Note:
1. Issue is not seen when scrolling using external mouse scroll wheel.
2. Issue is seen on scrolling with machine track pad.

@fbeaufort: Please find the screen cast of Chrome- Mac behavior, and let us know the update.

Thanks!!

Deleted: Jul 26 2017 3-09 PM.webm 3.0 MB

	Jul 26 2017 3-09 PM.webm 3.0 MB View Download

That is expected behavior in Mac. You can reproduce this bouncing effect on any page ;)