Disable failing telemetry unit tests on chromeos.

tools/telemetry/telemetry/user_story/user_story_runner_unittest.py

Index: tools/telemetry/telemetry/user_story/user_story_runner_unittest.py
diff --git a/tools/telemetry/telemetry/user_story/user_story_runner_unittest.py b/tools/telemetry/telemetry/user_story/user_story_runner_unittest.py
index 1e9c74aeea35b1d95d001bcfcdd4408dd4a27717..760ee98eb8baa5a81f0d096571a4a36e2dd21aed 100644
--- a/tools/telemetry/telemetry/user_story/user_story_runner_unittest.py
+++ b/tools/telemetry/telemetry/user_story/user_story_runner_unittest.py
@@ -7,6 +7,7 @@ import sys
 import unittest
 
 from telemetry import benchmark
+from telemetry import decorators
 from telemetry.core import exceptions
 from telemetry.page import page as page_module
 from telemetry.page import page_test
@@ -431,6 +432,7 @@ class UserStoryRunnerTest(unittest.TestCase):
     self.assertIn('RESULT metric: green= [2,4] unit', contents)
     self.assertIn('*RESULT metric: metric= [1,2,3,4] unit', contents)
 
+  @decorators.Disabled('chromeos')  # crbug.com/483212
   def testUpdateAndCheckArchives(self):
     usr_stub = system_stub.Override(user_story_runner, ['cloud_storage'])
     wpr_stub = system_stub.Override(archive_info, ['cloud_storage'])