chromium/third_party/blink/perf_tests/speedometer21/README.md

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

Revision: dbcb3d8abc51bc83065723a8b61f8591249a2bb0
Local modification: trailing whitespaces are stripped. All files that have
executable bit set are unset to bypass Chromium PRESUBMIT.