Disable a bunch of pyAuto tests due to CL 9963028 being reverted.

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 487 matching lines @@
       '-nacl_sdk.NaClSDKTest.testVerifyPrereleaseGallery',
       # crbug.com/109148
       '-extensions.ExtensionsTest.testTriggerBrowserAction',
       '-extensions.ExtensionsTest.testTriggerPageAction',
       '-extensions.ExtensionsTest.testTriggerPageActionWithPopup',
       # crbug.com/109160
       '-execute_javascript.ExecuteJavascriptTest.testExecuteJavascriptInExtension',
       # crbug.com/119605
       '-protector.ProtectorPreferencesTest.testPreferencesBackupInvalid',
       '-protector.ProtectorPreferencesTest.testPreferencesBackupInvalidChangeDismissedOnEdit',
+      # crbug.com/121594
+      '-browsing_data.BrowsingDataTest.testClearDownloads',
+      '-browsing_data.BrowsingDataTest.testClearHistoryAndDownloads',
+      '-browsing_data.BrowsingDataTest.testClearingAccuracy',
+      '-downloads.DownloadsTest',
+      '-find_in_page.FindMatchTests.testSearchWithinSpecialURL',
+      '-history.HistoryTest.testDownloadNoHistory',
+      '-infobars.InfobarTest.testMultipleDownloadsInfobar',
+      '-prefs.PrefsTest.testDownloadDirPref',
+      '-translate.TranslateTest.testDownloadsNotTranslated',
     ],
 
     'win': [
       'gpu',
 
       # ===========================
       # Permanently-disabled tests.
       # ===========================
       # Preloaded extensions affect process count: crbug.com/94350
       '-process_count',
@@ skipping 185 matching lines @@
 
   # HTML5 media performance tests.
   'AV_PERF': {
      'linux': [
        'media.media_constrained_network_perf',
        'media.media_jerky',
        'media.media_stat_perf',
      ],
   },
 }