Using json based tree status check.

BUG=None
TEST=None

Review URL: http://codereview.chromium.org/3116046

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@57444 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/PRESUBMIT.py b/PRESUBMIT.py
index 4c0aff1..4a4f8579 100644
--- a/PRESUBMIT.py
+++ b/PRESUBMIT.py
@@ -111,8 +111,7 @@
   results.extend(input_api.canned_checks.CheckTreeIsOpen(
       input_api,
       output_api,
-      'http://chromium-status.appspot.com/current?format=raw',
-      '(?i).*closed.*'))
+      json_url='http://chromium-status.appspot.com/current?format=json'))
   results.extend(input_api.canned_checks.CheckRietveldTryJobExecution(input_api,
       output_api, 'http://codereview.chromium.org', ('win', 'linux', 'mac'),
       '[email protected]'))