Wire FailureValue in PageTestResults (try 2).

tools/telemetry/telemetry/results/page_test_results_unittest.py

 # Copyright 2014 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.
 import os
 from telemetry.results import base_test_results_unittest
 
 from telemetry.page import page_set
 from telemetry.results import page_test_results
+from telemetry.value import failure
 
 class NonPrintingPageTestResults(
     page_test_results.PageTestResults):
   def __init__(self):
     super(NonPrintingPageTestResults, self).__init__()
 
   def _PrintPerfResult(self, *args):
     pass
 
 class PageTestResultsTest(base_test_results_unittest.BaseTestResultsUnittest):
   def setUp(self):
     self.page_set = page_set.PageSet(file_path=os.path.dirname(__file__))
     self.page_set.AddPageWithDefaultRunNavigate("http://www.bar.com/")
     self.page_set.AddPageWithDefaultRunNavigate("http://www.baz.com/")
     self.page_set.AddPageWithDefaultRunNavigate("http://www.foo.com/")
 
   @property
   def pages(self):
     return self.page_set.pages
 
   def test_failures(self):
     results = NonPrintingPageTestResults()
-    results.AddFailure(self.pages[0], self.CreateException())
+    results.AddValue(
+        failure.FailureValue(self.pages[0], self.CreateException()))
     results.AddSuccess(self.pages[1])
-    self.assertEquals(results.pages_that_had_failures,
-                      set([self.pages[0]]))
+    self.assertEquals(results.pages_that_had_failures, set([self.pages[0]]))
     self.assertEquals(results.successes, [self.pages[1]])