Chrome Version: 66.0.3359.139 (Official Build) Revision a020eddf0d85fe84d4a6787b304f50aafb670969-refs/branch-heads/3359@{#767} 32/64-bit.
OS: Win(7, 8, 8.1, 10), Mac(10.12.6, 10.13.1, 10.13.5) and Linux (14.04 LTS).

URL: https://chrome.google.com/webstore/detail/mutetab/acofndgbcimipbpeoplfjcapdbebbmca

What steps will reproduce the problem?
1. Launch Chrome, go to above URL and add the extension.
2. Go to www.youtube.com and play the any video.
3. Right click on tab-strip to open context menu, select ‘Mute Site’ option and observe.

Actual: Unable to mute the site.
Expected: Should be able to mute site.

This is a regression issue, broken in M-64 series, below is manual regression range.

Good build: 64.0.3243.0 (Revision: 509637)
Bad build: 64.0.3244.0 (Revision: 509944)

Using the per-revision bisect providing the bisect results:

You are probably looking for a change made after 509775 (known good), but no later than 509776 (first known 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/+log/e7fa637d7ac2f35b26ffc6c1d0b5cf443d6c787c..4bee58d8cc08debda0ea2d40a9d41a09b6f165a9

Suspecting: https://chromium.googlesource.com/chromium/src/+/4bee58d8cc08debda0ea2d40a9d41a09b6f165a9

@steimel: 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 concern owner.

NOTE: This issue is also reproducible on M-66 Beta (build # 66.0.3359.117), M-67 Dev (build #67.0.3396.18) and M-68 Canary (build # 68.0.3409.0).

Kindly review the attached screen-cast for reference.

Thank you.
 

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