[chromedriver] Re-enable window & screenshot tests on HEAD.

chrome/test/chromedriver/test/test_expectations

 # Copyright 2013 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.
 
 """Test expectation list for WebDriver Java acceptance tests.
 
 It is evaluated through Python.
 """
 
 import fnmatch
@@ skipping 82 matching lines @@
     'PageLoadingTest.testShouldBeAbleToAccessPagesWithAnInsecureSslCertificate',
     # Flaky: https://code.google.com/p/chromedriver/issues/detail?id=1113
     'FrameSwitchingTest.testShouldNotSwitchMagicallyToTheTopWindow',
     # Flaky: https://code.google.com/p/chromedriver/issues/detail?id=1151
     'DragAndDropTest.testDragAndDrop',
     'DragAndDropTest.testShouldAllowUsersToDragAndDropToElementsOffTheCurrentViewPort',
     'DragAndDropTest.testElementInDiv',
     # https://bugs.chromium.org/p/chromedriver/issues/detail?id=1503
     'BasicMouseInterfaceTest.testDraggingElementWithMouseFiresEvents',
     'BasicMouseInterfaceTest.testDraggingElementWithMouseMovesItToAnotherList',
-    # https://bugs.chromium.org/p/chromedriver/issues/detail?id=1625
-    'TakesScreenshotTest.*',
-    'WindowTest.*',
     # https://bugs.chromium.org/p/chromedriver/issues/detail?id=1674
     'WindowSwitchingTest.testShouldBeAbleToIterateOverAllOpenWindows',
 ]
 _REVISION_NEGATIVE_FILTER['57'] = (
     _REVISION_NEGATIVE_FILTER['HEAD'] + [
         # https://bugs.chromium.org/p/chromedriver/issues/detail?id=1625
         'TakesScreenshotTest.*',
         'WindowTest.*',
     ]
 )
@@ skipping 203 matching lines @@
     Set of passed test names.
   """
   filters = (_OS_NEGATIVE_FILTER[operating_system] +
              _GetRevisionNegativeFilter(chrome_version) +
              _GetSpecificOsRevisionNegativeFilter(operating_system,
                                                   chrome_version))
   passed = set(tests)
   for f in filters:
     passed.difference_update(set(t for t in tests if fnmatch.fnmatch(t, f)))
   return passed