Disable tests that don't run on ChromeOS

chrome/test/functional/PYAUTO_TESTS

 # Copyright (c) 2012 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.
 #
 # This file lists the pyauto tests that run as a part of the functional test
 # suite.
 #
 # Tests can be enabled on a per-platform basis. Tests not listed here will
 # not be run.
 #
@@ skipping 274 matching lines @@
       # Multi-profile doesn't apply to chromeos yet.
       '-multiprofile',
       # These require a custom setup on ChromeOS and have their own suite for
       # this platform.
       '-policy',
       '-policy_prefs_ui',
       # No Protector on ChromeOS.
       '-protector',
       # No Web Driver test for ChromeOS.
       '-about_plugins_ui',
+      # You cannot adjust the downloads directory on ChromeOS.
+      '-prefs.PrefsTest.testDownloadDirPref'
 
       # ==================================================
       # Disabled tests that need to be investigated/fixed.
       # ==================================================
       # crosbug.com/19556
       '-autofill.AutofillTest.testDisplayLineItemForEntriesWithNoCCNum',
       '-autofill.AutofillTest.testPostalCodeAndStateLabelsBasedOnCountry',
       # Downloads panel stays even after declining a download.
       # crosbug.com/14728
       '-downloads.DownloadsTest.testDeclineDangerousDownload',
@@ skipping 38 matching lines @@
       # crosbug.com/20025
       '-chromeos_browser.ChromeosBrowserTest.testFullScreen',
       # crosbug.com/19556
       '-pyauto_webdriver',
       # crbug.com/102549
       '-notifications.NotificationsTest.testOriginPrefsNotSavedInIncognito',
       # crbug.com/103379
       '-policy.PolicyTest.testDisable3DAPIs',
       # Chrome driver does not work in Chrome OS.
       '-prefs_ui',
+      '-prefs.PrefsTest.testGeolocationBlockedWhenTrackingDenied'
     ],
   },
 
   # The CONTINUOUS_PUBLIC is a subset of CONTINUOUS suite
   # and excludes tests that depend on internal data
   'CONTINUOUS_PUBLIC': {
     'all': [
       '@CONTINUOUS',
 
       # ==================================================
@@ skipping 280 matching lines @@
     ],
   },
 
   # HTML5 media performance tests.
   'AV_PERF': {
      'linux': [
        'media.media_constrained_network_perf',
      ],
   },
 }