tree bc9af1b27ca219db62cad9b364f8429c51e9c118
parent 2f91ec49231f7a0b05234016e80b408f01d9bd6b
author Milutin Kristofic <milutin@google.com> 1571400521 +0200
committer Milutin Kristofic <milutin@google.com> 1573125422 +0100

Create metric for long javascript tasks

LongTasks API is well supported by most browsers. We can use it to
capture javascript tasks longer than 200 ms, so we can better
understand what is impact of javascript execution on page load.

Change-Id: I8fe0ec20e35ed3aa8dd97db43b345d6db72e4a85