Fix crash when running "run_benchmark help run"

tools/telemetry/telemetry/benchmark_runner.py

Index: tools/telemetry/telemetry/benchmark_runner.py
diff --git a/tools/telemetry/telemetry/benchmark_runner.py b/tools/telemetry/telemetry/benchmark_runner.py
index a9b7ec6a70bc1c58d2f6a756936c633e0be6b6de..745ea4360524b7ea6dddba60d1bd5eed5a18a704 100644
--- a/tools/telemetry/telemetry/benchmark_runner.py
+++ b/tools/telemetry/telemetry/benchmark_runner.py
@@ -62,13 +62,13 @@ class Help(command_line.OptparseCommand):
 
   usage = '[command]'
 
-  def Run(self, args):
+  def Run(self, args, environment):
     if len(args.positional_args) == 1:
       commands = _MatchingCommands(args.positional_args[0])
       if len(commands) == 1:
         command = commands[0]
         parser = command.CreateParser()
-        command.AddCommandLineArgs(parser, None)
+        command.AddCommandLineArgs(parser, environment)
         parser.print_help()
         return 0
 
@@ -108,7 +108,7 @@ class List(command_line.OptparseCommand):
     else:
       parser.error('Must provide at most one benchmark name.')
 
-  def Run(self, args):
+  def Run(self, args, _):
     possible_browser = browser_finder.FindBrowser(args)
     if args.browser_type in (
         'exact', 'release', 'release_x64', 'debug', 'debug_x64', 'canary'):
@@ -191,7 +191,7 @@ class Run(command_line.OptparseCommand):
 
     cls._benchmark = benchmark_class
 
-  def Run(self, args):
+  def Run(self, args, _):
     return min(255, self._benchmark().Run(args))
 
 
@@ -377,4 +377,4 @@ def main(environment):
     args = args[1:]
   options.positional_args = args
   command.ProcessCommandLineArgs(parser, options, environment)
-  return command().Run(options)
+  return command().Run(options, environment)