Support flag --also-run-disabled-tests for system health tests

tools/perf/page_sets/system_health/system_health_story.py

 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 from page_sets.system_health import platforms
 from page_sets.system_health import story_tags
 
 from telemetry import decorators
 from telemetry.page import page
 from telemetry.page import shared_page_state
@@ skipping 21 matching lines @@
 
        class Story(system_health_story.SystemHealthStory):
          ...
 
          @classmethod
          def ShouldDisable(cls, possible_browser):
            return possible_browser.platform.GetOSName() == 'win'
   """
 
   def CanRunStory(self, story):
+    if self._finder_options.run_disabled_tests:
+      return True
     return story.CanRun(self.possible_browser)
 
 
 class _MetaSystemHealthStory(type):
   """Metaclass for SystemHealthStory."""
 
   @property
   def ABSTRACT_STORY(cls):
     """Class field marking whether the class is abstract.
 
@@ skipping 61 matching lines @@
     pass
 
   def RunNavigateSteps(self, action_runner):
     self._Login(action_runner)
     super(SystemHealthStory, self).RunNavigateSteps(action_runner)
 
   def RunPageInteractions(self, action_runner):
     action_runner.tab.WaitForDocumentReadyStateToBeComplete()
     self._DidLoadDocument(action_runner)
     self._Measure(action_runner)