def _StartDevToolsTracing(self, config, timeout):
if not chrome_tracing_devtools_manager.IsSupported(self._platform_backend):
return False
devtools_clients = (chrome_tracing_devtools_manager
.GetActiveDevToolsClients(self._platform_backend))
if not devtools_clients:
return False
for client in devtools_clients:
if client.is_tracing_running:
raise ChromeTracingStartedError(
'Tracing is already running on devtools at port %s on platform'
'backend %s.' % (client.remote_port, self._platform_backend))
client.StartChromeTracing(config, timeout)
return True
def IsSupported(cls, platform_backend):
if cls.IsStartupTracingSupported(platform_backend):
return True
else:
return chrome_tracing_devtools_manager.IsSupported(
platform_backend)
