UserAgent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:57.0) Gecko/20100101 Firefox/57.0

Steps to reproduce the problem:
1. Record profile data from the browser (v8.log)
  ./chrome --no-sandbox --js-flags="--prof --log-timer-events"
2. Produce a plot image with tools/plot-timer-events v8.log
or
Run tools/linux-tick-processor v8.log
3. No meaningful data is provided

What is the expected behavior?
Data in the V8.log file should be parsed and presented in the graph or summarised by the tick processor

What went wrong?
Composer.js does not match the latest labels coming out of V8 so they are not getting processed

Did this work before? Yes Earlier than 59

Chrome version: 63.0.3239.108  Channel: n/a
OS Version: Ubuntu 16.04
Flash Version: N/A