Gardening: inspector/profiler/cpu-profiler-profiling.html is flaky

BUG=369035
TBR=jsbell

Review URL: https://codereview.chromium.org/260903008

git-svn-id: svn://svn.chromium.org/blink/trunk@173078 bbb929c8-8fbe-4397-9dbb-9b2b20218538