telemetry: Remove command line args from page test

tools/perf/measurements/startup.py

Index: tools/perf/measurements/startup.py
diff --git a/tools/perf/measurements/startup.py b/tools/perf/measurements/startup.py
index 6d26ee92a1a1b00e43ea42752d15bb2a18366dd9..bc0617d593f6e07930fdcf87fba1d247b7a3b6ad 100644
--- a/tools/perf/measurements/startup.py
+++ b/tools/perf/measurements/startup.py
@@ -9,30 +9,16 @@ from telemetry.page import page_test
 class Startup(page_test.PageTest):
   """Performs a measurement of Chromium's startup performance.
 
-  This test must be invoked with either --warm or --cold on the command line. A
-  cold start means none of the Chromium files are in the disk cache. A warm
-  start assumes the OS has already cached much of Chromium's content. For warm
-  tests, you should repeat the page set to ensure it's cached.
+  Uses cold start if cold==True, otherwise uses warm start. A cold start means
+  none of the Chromium files are in the disk cache. A warm start assumes the OS
+  has already cached much of Chromium's content. For warm tests, you should
+  repeat the page set to ensure it's cached.
   """
 
-  def __init__(self, action_name_to_run = ''):
+  def __init__(self, cold=False, action_name_to_run=''):
     super(Startup, self).__init__(needs_browser_restart_after_each_page=True,
                                   action_name_to_run=action_name_to_run)
-
-  @classmethod
-  def AddCommandLineArgs(cls, parser):
-    parser.add_option('--cold', action='store_true',
-                      help='Clear the OS disk cache before performing the test')
-    parser.add_option('--warm', action='store_true',
-                      help='Start up with everything already cached')
-
-  @classmethod
-  def ProcessCommandLineArgs(cls, parser, args):
-    cls._cold = args.cold
-    # TODO: Once the bots start running benchmarks, enforce that either --warm
-    # or --cold is explicitly specified.
-    # if args.warm == args.cold:
-    #   parser.error('You must specify either --warm or --cold')
+    self._cold = cold
 
   def CustomizeBrowserOptions(self, options):
     if self._cold:
@@ -55,14 +41,15 @@ class Startup(page_test.PageTest):
 class StartWithUrl(Startup):
   """Performs a measurement of Chromium's performance starting with a URL.
 
-  This test must be invoked with either --warm or --cold on the command line. A
-  cold start means none of the Chromium files are in the disk cache. A warm
-  start assumes the OS has already cached much of Chromium's content. For warm
-  tests, you should repeat the page set to ensure it's cached.
+  Uses cold start if cold==True, otherwise uses warm start. A cold start means
+  none of the Chromium files are in the disk cache. A warm start assumes the OS
+  has already cached much of Chromium's content. For warm tests, you should
+  repeat the page set to ensure it's cached.
 
   The startup URL is taken from the page set's startup_url. This
   allows the testing of multiple different URLs in a single benchmark.
   """
 
-  def __init__(self):
-    super(StartWithUrl, self).__init__(action_name_to_run='RunNavigateSteps')
+  def __init__(self, cold=False):
+    super(StartWithUrl, self).__init__(cold=cold,
+                                       action_name_to_run='RunNavigateSteps')