Check in the thirdparty libs needed for webkitpy.

Tools/Scripts/webkitpy/thirdparty/webpagereplay/perftracker/README

Index: Tools/Scripts/webkitpy/thirdparty/webpagereplay/perftracker/README
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+The PerfTracker application is an automated test run framework to measure
+network performance through Chromium using WebPageReplay and storing results
+in a Google AppEngine service.
+
+CONTENTS:
+app/           - This is the AppEngine application for collecting results.
+extension/     - This is an extension to run inside of Chrome which will drive
+                 the test automation.
+runner.py      - The main glue to run the entire harness
+runner_cfg.py  - Configuration to the harness. Edit this file!
+
+
+HOW TO USE:
+First, you'll need to create your own Google AppEngine service.  You can use
+the dev_appserver.py before using a real service.
+
+Second, you'll need to modify runner_cfg.py to capture the configurations you
+wish to test, and to point at the appropriate servers and such.
+
+Third, run runner.py!
+