Since Apple acquired Worklfow a few apps were removed from working in Workflow. It has since come out that apps are required to sign some type of permission agreement to be included, so allegedly these apps didnt. I think the biggest one people are upset about though is opening web pages in Google Chrome.
This Workflow is similar to my one about Narwhal where it just utilizes the Google Chrome URL scheme to redirect into Chrome.
My understanding of how the Google Chrome URL schemes works is you replace http:// or https:// with googlechrome:// and the webpage will open in Chrome. That's what this workflow does.
You can get the workflow here.