ChromeDriver test SlowLoadingPageTest.testRefreshShouldBlockUntilPageLoads occasionally fails on Waterfall for ChromeDriver test automation run.

Slow loading tests fail on assertion error for expected and actual page load time.

To reproduce the issue you'll need to do the following steps:
1. clone 'chromium' project.
2. go to src/chrome/test/chromedriver/third_party/
3. git clone https://chromium.googlesource.com/chromium/deps/webdriver java_tests
4. go to src/chrome/test/chromedriver/test
5. Run the following command:
   python run_java_tests.py --chromedriver=<path/chromedriver> --log-path=<full_path_to_log_file> --filter="<test_name>"

For this particular case --filter=SlowLoadingPageTest.testRefreshShouldBlockUntilPageLoads

To see the available options type "python run_java_tests.py --help"

ChromeDriver bug https://bugs.chromium.org/p/chromedriver/issues/detail?id=2532 is opened to track this issue.