[Chromedriver] Chromedriver should handle unexpected alert automatically.

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 57 matching lines @@
     'TakesScreenshotTest.testShouldCaptureScreenshotWithTooLong',
     'TakesScreenshotTest.testShouldCaptureScreenshotWithTooLongX',
     'TakesScreenshotTest.testShouldCaptureScreenshotWithTooLongY',
     'TextPagesTest.testShouldBeAbleToLoadASimplePageOfText',
     'TextPagesTest.testShouldThrowExceptionWhenAddingCookieToAPageThatIsNotHtml',
     'TypingTest.testGenerateKeyPressEventEvenWhenElementPreventsDefault',
     'TypingTest.testNonPrintableCharactersShouldWorkWithContentEditableOrDesignModeSet',
     'TypingTest.testShouldBeAbleToTypeIntoContentEditableElementWithExistingValue',
     'TypingTest.testShouldNotTypeIntoElementsThatPreventKeyDownEvents',
     'TypingTest.testTypingIntoAnIFrameWithContentEditableOrDesignModeSet',
-    'UnexpectedAlertBehaviorTest.*',
+    'UnexpectedAlertBehaviorTest.requiredUnhandledAlertCapabilityHasPriorityOverDesired',
+    'UnexpectedAlertBehaviorTest.dismissUnhandledAlertsByDefault',
     'VisibilityTest.testElementHiddenByOverflowXIsNotVisible',
     'VisibilityTest.testElementHiddenByOverflowYIsNotVisible',
     'VisibilityTest.tooSmallAWindowWithOverflowHiddenIsNotAProblem',
     'WindowTest.testCanMaximizeTheWindowFromFrame',
     'WindowTest.testCanMaximizeTheWindowFromIframe',
     'WindowTest.testSetsTheSizeOfTheCurrentWindow',
     'WindowTest.testCanMaximizeTheWindow',
     # Flaky: https://code.google.com/p/chromedriver/issues/detail?id=528
     'PageLoadingTest.testShouldDoNothingIfThereIsNothingToGoBackTo',
     # Flaky: https://code.google.com/p/chromedriver/issues/detail?id=653
@@ skipping 80 matching lines @@
     'SessionHandlingTest.callingAnyOperationAfterClosingTheLastWindowShouldThrowAnException',
     'SessionHandlingTest.callingQuitAfterClosingTheLastWindowIsANoOp',
     'TakesScreenshotTest.testCaptureToBase64',
     'TakesScreenshotTest.testSaveScreenshotAsFile',
     'TakesScreenshotTest.testShouldCaptureScreenshotAtFramePage',
     'TakesScreenshotTest.testShouldCaptureScreenshotAtFramePageAfterSwitching',
     'TakesScreenshotTest.testShouldCaptureScreenshotAtIFramePageAfterSwitching',
 
     # Alerts are not yet supported on Android.
     'AlertsTest.*',
+    'UnexpectedAlertBehaviorTest.*',
 
     # http://crbug.com/156390
     'DragAndDropTest.*',
 
     # Scrolling touch events are not supported.
     'TouchScrollTest.*',
 
     # These tests start multiple sessions, which is not supported on a single
     # Android device.
     "AvailableLogsTest.shouldBeAbleToEnableProfilerLog",
@@ skipping 119 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