[Telemetry] Add 'name' attribute for pages, which allows for more human-readable printing

tools/perf/metrics/v8_object_stats.py

Index: tools/perf/metrics/v8_object_stats.py
diff --git a/tools/perf/metrics/v8_object_stats.py b/tools/perf/metrics/v8_object_stats.py
index 79b0fad92e0d8f57e7d6c9ceb456fc1465b9fdef..7db05e6f26ab3abfdb170e20b3197b5bfae29480 100644
--- a/tools/perf/metrics/v8_object_stats.py
+++ b/tools/perf/metrics/v8_object_stats.py
@@ -183,7 +183,7 @@ class V8ObjectStatsMetric(Metric):
  })(%s);
  """ % json.dumps(_COUNTER_NAMES))
     if not self._results:
-      logging.warning('No V8 object stats from website: ' + page.display_url)
+      logging.warning('No V8 object stats from website: ' + page.display_name)
 
   def AddResults(self, tab, results):
     """Add results for this page to the results object."""