Remove the inheritance from PageTestResults to unittest.TestResult.

tools/telemetry/telemetry/results/gtest_test_results_unittest.py

Index: tools/telemetry/telemetry/results/gtest_test_results_unittest.py
diff --git a/tools/telemetry/telemetry/results/gtest_test_results_unittest.py b/tools/telemetry/telemetry/results/gtest_test_results_unittest.py
index 7175f10aa5de3b1806f736500b22023f7013b198..b7ad5a85ea23cd8f3c6476ef5cb4121d7423e4b8 100644
--- a/tools/telemetry/telemetry/results/gtest_test_results_unittest.py
+++ b/tools/telemetry/telemetry/results/gtest_test_results_unittest.py
@@ -86,6 +86,18 @@ class GTestTestResultsTest(
                 '1 FAILED TEST\n\n' % exception_trace)
     self.assertEquals(expected, ''.join(results.output_data))
 
+  def testSingleSkippedPage(self):
+    test_page_set = _MakePageSet()
+    results = SummaryGtestTestResults()
+    results.StartTest(test_page_set.pages[0])
+    self._mock_timer.SetTime(0.007)
+    results.AddSkip(test_page_set.pages[0], 'Page skipped for testing reason')
+    results.PrintSummary()
+    expected = ('[ RUN      ] http://www.foo.com/\n'
+                '[       OK ] http://www.foo.com/ (7 ms)\n'
+                '[  PASSED  ] 0 tests.\n\n')
+    self.assertEquals(expected, ''.join(results.output_data))
+
   def testPassAndFailedPages(self):
     test_page_set = _MakePageSet()
     results = SummaryGtestTestResults()
@@ -126,5 +138,27 @@ class GTestTestResultsTest(
                 '2 FAILED TESTS\n\n' % (exception_trace, exception_trace))
     self.assertEquals(expected, ''.join(results.output_data))
 
+  def testStreamingResults(self):
+    test_page_set = _MakePageSet()
+    results = SummaryGtestTestResults()
+    exception = self.CreateException()
+
+    results.StartTest(test_page_set.pages[0])
+    self._mock_timer.SetTime(0.007)
+    results.AddSuccess(test_page_set.pages[0])
+    expected = ('[ RUN      ] http://www.foo.com/\n'
+                '[       OK ] http://www.foo.com/ (7 ms)\n')
+    self.assertEquals(expected, ''.join(results.output_data))
+
+    results.StartTest(test_page_set.pages[1])
+    self._mock_timer.SetTime(0.009)
+    exception_trace = ''.join(traceback.format_exception(*exception))
+    results.AddError(test_page_set.pages[1], exception)
+    expected = ('[ RUN      ] http://www.foo.com/\n'
+                '[       OK ] http://www.foo.com/ (7 ms)\n'
+                '[ RUN      ] http://www.bar.com/\n'
+                '%s\n'
+                '[  FAILED  ] http://www.bar.com/ (2 ms)\n' % exception_trace)
+
   def tearDown(self):
     gtest_test_results.time.time = self._real_gtest_time_time