[Findit] Add link to swarming tasks.

appengine/findit/handlers/flake/check_flake.py

Index: appengine/findit/handlers/flake/check_flake.py
diff --git a/appengine/findit/handlers/flake/check_flake.py b/appengine/findit/handlers/flake/check_flake.py
index fedd50f0734f23bedc20e7d13d595f0cd6f63849..e55c6fc1f4ee39163a12df7716746b5db59c4bb8 100644
--- a/appengine/findit/handlers/flake/check_flake.py
+++ b/appengine/findit/handlers/flake/check_flake.py
@@ -19,6 +19,9 @@ from waterfall.flake import flake_analysis_service
 from waterfall.flake import triggering_sources
 
 
+SWARMING_TASK_BASE_URL = 'https://chromium-swarm.appspot.com'
+
+
 def _GetSuspectedFlakeAnalysisAndTriageResult(analysis):
   if analysis.suspected_flake_build_number is not None:
     return {
@@ -183,7 +186,14 @@ class CheckFlake(BaseHandler):
 
     coordinates = []
     for data_point in analysis.data_points:
-      coordinates.append([data_point.build_number, data_point.pass_rate])
+      if data_point.task_id:
+        task_url = '%s/task?id=%s' % (
+            SWARMING_TASK_BASE_URL, data_point.task_id)
+        coordinates.append([
+            data_point.build_number, data_point.pass_rate, task_url])
+      else:
+        coordinates.append([
+            data_point.build_number, data_point.pass_rate, None])
 
     # Order by build number from earliest to latest.
     coordinates.sort(key=lambda x: x[0])