Disable unit tests that fail on cros.

tools/telemetry/telemetry/page/actions/loop_unittest.py

Index: tools/telemetry/telemetry/page/actions/loop_unittest.py
diff --git a/tools/telemetry/telemetry/page/actions/loop_unittest.py b/tools/telemetry/telemetry/page/actions/loop_unittest.py
index 2b0ae881d79e9d0f10ee774951702a862e40d26f..9317ffbbb83ef30f1e1c65d48be5126eb0c4ab44 100644
--- a/tools/telemetry/telemetry/page/actions/loop_unittest.py
+++ b/tools/telemetry/telemetry/page/actions/loop_unittest.py
@@ -4,6 +4,7 @@
 
 from telemetry.core import util
 from telemetry.page.actions import loop
+from telemetry.unittest import DisabledTestOnCrOS
 from telemetry.unittest import tab_test_case
 
 AUDIO_1_LOOP_CHECK = 'window.__hasEventCompleted("#audio_1", "loop");'
@@ -18,6 +19,7 @@ class LoopActionTest(tab_test_case.TabTestCase):
     self._tab.Navigate(self._browser.http_server.UrlOf('video_test.html'))
     self._tab.WaitForDocumentReadyStateToBeComplete()
 
+  @DisabledTestOnCrOS
   def testLoopWithNoSelector(self):
     """Tests that with no selector Loop action loops first media element."""
     data = {'selector': '#video_1', 'loop_count': 2}
@@ -28,6 +30,7 @@ class LoopActionTest(tab_test_case.TabTestCase):
     self.assertTrue(self._tab.EvaluateJavaScript(VIDEO_1_LOOP_CHECK))
     self.assertFalse(self._tab.EvaluateJavaScript(AUDIO_1_LOOP_CHECK))
 
+  @DisabledTestOnCrOS
   def testLoopWithAllSelector(self):
     """Tests that Loop action loops all video elements with selector='all'."""
     data = {'selector': 'all', 'loop_count': 2}
@@ -41,6 +44,7 @@ class LoopActionTest(tab_test_case.TabTestCase):
     self.assertTrue(self._tab.EvaluateJavaScript(VIDEO_1_LOOP_CHECK))
     self.assertTrue(self._tab.EvaluateJavaScript(AUDIO_1_LOOP_CHECK))
 
+  @DisabledTestOnCrOS
   def testLoopWaitForLoopTimeout(self):
     """Tests that wait_for_loop timeouts if video does not loop."""
     data = {'selector': '#video_1',