Merge pull request #434 from WPO-Foundation/433

Stop checking for LH version <7 and use new params by default

internal/devtools_browser.py

@@ -798,15 +798,13 @@ def run_lighthouse_test(self, task):
  command.append('--save-assets')
  if not self.job['keep_lighthouse_screenshots']:
  command.extend(['--skip-audits', 'screenshot-thumbnails,final-screenshot'])
- form_factor_command = '--form-factor' if lighthouse_version >= 7 else '--emulated-form-factor'
+ form_factor_command = '--form-factor'
  if self.options.android:
  command.extend([form_factor_command, 'mobile'])
- if lighthouse_version >= 7:
- command.extend(['--screenEmulation.disabled'])
+ command.extend(['--screenEmulation.disabled'])
  elif 'mobile' not in self.job or not self.job['mobile']:
  command.extend([form_factor_command, 'desktop'])
- if lighthouse_version >= 7:
- command.extend(['--screenEmulation.disabled'])
+ command.extend(['--screenEmulation.disabled'])
  if 'user_agent_string' in self.job:
  sanitized_user_agent = re.sub(r'[^a-zA-Z0-9_\-.;:/()\[\] ]+', '', self.job['user_agent_string'])
  command.append('--chrome-flags="--user-agent=\'{0}\'"'.format(sanitized_user_agent))