Re-enable a few download tests

chrome/test/functional/PYAUTO_TESTS

 # Copyright (c) 2011 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 67 matching lines @@
       'themes',
       'youtube',
 
       # ==================================================
       # Disabled tests that need to be investigated/fixed.
       # ==================================================
       # crbug.com/83686
       '-autofill.AutofillTest.testFillProfileCrazyCharacters',
       # crbug.com/99475
       '-autofill.AutofillTest.testNoDuplicatePhoneNumsInPrefs',
-      # Browser crash when clearing browsing history and downloads together.
-      # crbug.com/97695
-      '-downloads.DownloadsTest.testBigZip',
-      '-downloads.DownloadsTest.testFileRenaming',
-      '-downloads.DownloadsTest.testCrazyFilenames',
       # crbug.com/103456
       '-indexeddb.IndexedDBTest.testVersionChangeCrashResilience',
       # crbug.com/99506
       '-notifications.NotificationsTest.testSpecialURLNotification',
       # crbug.com/71715
       '-omnibox.OmniboxTest.testHistoryResult',
       # crbug.com/97140
       '-plugins.PluginsTest.testDisableEnableAllPlugins',
       # crbug.com/82629 - real bug.
       '-popups.PopupsTest.testPopupsLaunchUponBrowserBackButton',
@@ skipping 513 matching lines @@
 
   # HTML5 media functional tests.
   'AV_FUNC': {
      'linux': [
        'media.media_event_simple_action',
        'media.media_event_simple_test',
        'media.media_event_track',
      ],
   },
 }