New rtc dump analyzing tool in Python

R=henrik.lundin@webrtc.org, ivoc@webrtc.org, kwiberg@webrtc.org, peah@webrtc.org, phoglund@webrtc.org

Review-Url: https://codereview.webrtc.org/1999113002
Cr-Commit-Position: refs/heads/master@{#13218}
diff --git a/PRESUBMIT.py b/PRESUBMIT.py
index 5d5a5c3..1ece201 100755
--- a/PRESUBMIT.py
+++ b/PRESUBMIT.py
@@ -397,6 +397,7 @@
 
   test_directories = [
     join('tools', 'autoroller', 'unittests'),
+    join('webrtc', 'tools', 'py_event_log_analyzer'),
   ]
 
   tests = []