Disable failing android tests on cros.

tools/telemetry/telemetry/core/platform/android_platform_backend_unittest.py

Index: tools/telemetry/telemetry/core/platform/android_platform_backend_unittest.py
diff --git a/tools/telemetry/telemetry/core/platform/android_platform_backend_unittest.py b/tools/telemetry/telemetry/core/platform/android_platform_backend_unittest.py
index 9b031dbe82e42eae26109514530dbc5e0d2411d6..c5cbe65f8a90795afbf54cf97e398bfa20a9d080 100644
--- a/tools/telemetry/telemetry/core/platform/android_platform_backend_unittest.py
+++ b/tools/telemetry/telemetry/core/platform/android_platform_backend_unittest.py
@@ -39,6 +39,7 @@ class AndroidPlatformBackendTest(unittest.TestCase):
   def tearDown(self):
     self._stubs.Restore()
 
+  @test.Disabled('chromeos')
   def testGetCpuStats(self):
     proc_stat_content = [
         '7702 (.android.chrome) S 167 167 0 0 -1 1077936448 '
@@ -52,6 +53,7 @@ class AndroidPlatformBackendTest(unittest.TestCase):
     cpu_stats = backend.GetCpuStats('7702')
     self.assertEquals(cpu_stats, {'CpuProcessTime': 5.0})
 
+  @test.Disabled('chromeos')
   def testGetCpuStatsInvalidPID(self):
     # Mock an empty /proc/pid/stat.
     adb_empty_proc_stat = MockAdbCommands([])