UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.167 Safari/537.36

Steps to reproduce the problem:
1. pin gmail
2. have an email come in
3. the tab shows a blue dot

What is the expected behavior?
Web apps have started to put notifications into favicons. Slack distinguishes several states, gmail can put a count of unread emails in there. The blue "attention" icon can partially obscure these.

What went wrong?
The browser assumes that a title change means "tab needs attention" (as per [1]) which is incorrect.

[1] https://chromium.googlesource.com/chromium/src/+/21620f905fe7cf72d23c16e170e3f9c8018ed0a1/chrome/browser/ui/views/tabs/tab.cc#432

Did this work before? N/A 

Chrome version: 64.0.3282.167  Channel: stable
OS Version: OS X 10.13.3
Flash Version: 

In future, we might want to have a Web api for a page to request a notification of some sort, for now, we should have a configuration flag, or something like "ignore title changes" in the context menu for a pinned tab.

Support: https://plus.google.com/u/0/+FrancoisBeaufort/posts/6HjyynfbSGK?cfem=1

Relevant other issues:  775603  and  473898