This folder is copy from PerformanceTests folder in webkit's repo
(https://github.com/WebKit/webkit/tree/master/PerformanceTests).

Revision: 65d99b55b36bcb5af7389eb51cbf1dbdfad26b32
Local modification: trailing whitespaces are stripped. All files that have
executable bit set are unset to bypass Chromium PRESUBMIT.
