Filing this issue from the buganizer - b/79372356

Tested the issue in Android and able to reproduce the issue. 

Prerequisites - Disable 'Autoplay' from Chrome Settings >> Site Settings >> Media >> Autoplay
Steps Followed:
1. Launch Chrome.
2. Navigate to any URL - cnn.com/politics and tap on a link which has video in it.
3. Observed that in the link selected, video plays without any user action to play video.

Chrome versions tested:
66.0.3359.158(Stable), 68.0.3425.0(Canary)

OS:
Android 8.1.0

Android Devices:
Pixel 2 XL

Using the per-revision bisect providing the bisect results,
Good Build - 65.0.3299.0 (524906)
Bad Build - 65.0.3300.0 (525555)

You are looking for a change made after 524986(GOOD), but before 524987(BAD).

CHANGELOG URL:
The script might not always return single CL as suspect as some perf builds might get missing due to failure.
https://chromium.googlesource.com/chromium/src/+/7b74ab4850b0115a996f0076733bc90fc7f8a273

@mlamouri:  Could you please look into the issue, pardon me if it has nothing to do with your changes and if possible please assign it to owner concerned.

Thanks!