[Chromedriver] Chromedriver should handle unexpected alert automatically.

chrome/test/chromedriver/test/run_py_tests.py

Index: chrome/test/chromedriver/test/run_py_tests.py
diff --git a/chrome/test/chromedriver/test/run_py_tests.py b/chrome/test/chromedriver/test/run_py_tests.py
index b29ef73880296f9fcd954b74623d4ccfea73ca38..db05eb1c16081de3e4e5d20db69b42d1e6043f28 100755
--- a/chrome/test/chromedriver/test/run_py_tests.py
+++ b/chrome/test/chromedriver/test/run_py_tests.py
@@ -714,6 +714,15 @@ class ChromeDriverTest(ChromeDriverBaseTest):
     self.assertEquals(False,
                       self._driver.ExecuteScript('return window.confirmed'))
 
+  def testShouldAcceptUnhandledAlertAutomatically(self):
+    url = self.GetHttpUrlForFile('/chromedriver/empty.html')
+    self._driver.Load(url)
+    self._driver.ExecuteScript('window.alert("Hi");')
+    self.assertTrue(self._driver.IsAlertOpen())
+    self.assertRaises(chromedriver.UnexpectedAlertOpen,
+                      self._driver.GetCurrentUrl)
+    self.assertEquals(url, self._driver.GetCurrentUrl())
+
   def testShouldHandleNewWindowLoadingProperly(self):
     """Tests that ChromeDriver determines loading correctly for new windows."""
     self._http_server.SetDataForPath(