Just to be clear, this webpage is describing a metric that is part of webpagetest.org an open source project that just happens to be hosted on Google Code and G

Just to be clear, this webpage is describing a metric that is part of webpagetest.org an open source project that just happens to be hosted on Google Code and Google Pages. While some Google employees may contribute to the project, it is not an open sourcing of Google Search's exact page speed metrics.