Make flakiness dashboard links to googlesource work post git migration.

appengine_module/test_results/main.py

Index: appengine_module/test_results/main.py
diff --git a/appengine_module/test_results/main.py b/appengine_module/test_results/main.py
index 7895be9c990cfef3f9fd1535ced8ccb38799cdec..f89fec86577c5fc50041af7a8e1e977916391851 100644
--- a/appengine_module/test_results/main.py
+++ b/appengine_module/test_results/main.py
@@ -31,6 +31,7 @@ import webapp2
 from appengine_module.test_results.handlers import buildershandler
 from appengine_module.test_results.handlers import builderstatehandler
 from appengine_module.test_results.handlers import menu
+from appengine_module.test_results.handlers import redirector
 from appengine_module.test_results.handlers import testfilehandler
 
 routes = [
@@ -43,6 +44,8 @@ routes = [
     ('/builderstate', builderstatehandler.GetBuilderState),
     ('/updatebuilderstate', builderstatehandler.Update),
     ('/', menu.Menu),
+    webapp2.Route('/revision_range', webapp2.RedirectHandler, defaults={
+        '_uri': redirector.get_googlesource_url}),
 ]
 
 app = webapp2.WSGIApplication(routes, debug=True)