Disable failing telemetry unit tests on chromeos.

tools/telemetry/telemetry/internal/actions/drag_unittest.py

Index: tools/telemetry/telemetry/internal/actions/drag_unittest.py
diff --git a/tools/telemetry/telemetry/internal/actions/drag_unittest.py b/tools/telemetry/telemetry/internal/actions/drag_unittest.py
index e976ff6a050181eeb1d3db55f15d1702d254ce2b..c14e85a00925881fe0093a4962fb0a0c5f036ac2 100644
--- a/tools/telemetry/telemetry/internal/actions/drag_unittest.py
+++ b/tools/telemetry/telemetry/internal/actions/drag_unittest.py
@@ -5,6 +5,7 @@ import logging
 import math
 import os
 
+from telemetry import decorators
 from telemetry.internal.actions import drag
 from telemetry.internal.actions import page_action
 from telemetry.unittest_util import tab_test_case
@@ -15,6 +16,7 @@ class DragActionTest(tab_test_case.TabTestCase):
     error_range = abs(expected * error_ratio)
     return abs(value - expected) <= error_range
 
+  @decorators.Disabled('chromeos')  # crbug.com/483212
   def testDragAction(self):
     self.Navigate('draggable.html')