Create debug dialog for data stoppage alerts.

dashboard/dashboard/dispatcher.py

Index: dashboard/dashboard/dispatcher.py
diff --git a/dashboard/dashboard/dispatcher.py b/dashboard/dashboard/dispatcher.py
index 51841c4fdf6b6824543b704fefa9bae5d5c228b4..38d7851d35a931c02e002bda7a0de835bb05899e 100644
--- a/dashboard/dashboard/dispatcher.py
+++ b/dashboard/dashboard/dispatcher.py
@@ -51,6 +51,7 @@ from dashboard import set_warning_message
 from dashboard import short_uri
 from dashboard import speed_releasing
 from dashboard import start_try_job
+from dashboard import stoppage_alert_debugging_info
 from dashboard import test_buildbucket
 from dashboard import update_bug_with_results
 from dashboard import update_test_suites
@@ -103,6 +104,8 @@ _URL_MAPPING = [
     ('/short_uri', short_uri.ShortUriHandler),
     ('/speed_releasing', speed_releasing.SpeedReleasingHandler),
     ('/start_try_job', start_try_job.StartBisectHandler),
+    ('/stoppage_alert_debugging_info',
+     stoppage_alert_debugging_info.StoppageAlertDebuggingInfoHandler),
     ('/test_buildbucket', test_buildbucket.TestBuildbucketHandler),
     ('/update_bug_with_results',
      update_bug_with_results.UpdateBugWithResultsHandler),