Flock, the four-year-old Redwood City, Calif.-based browser maker, according to a report in TechCrunch today is said to be making a switch to Google’s Chrome (actually Chromium) from Mozilla Firefox.

However, a senior Flock employee says that it is not the case. “No, we haven’t switched. We’ve looked at it, just as we’ve looked at Mozilla 2, and will look at whatever else is promising,” is how Flock employee and director of engineering Matthew Willis described the situation in a tweet. Willis in the past had worked on Mozilla’s calendar efforts, Sunbird and Lightning.

My sources say that towards the end of 2008, Flock devoted a single person to work on an experimental version of its browser using Chromium as a back end instead of Firefox.

But why would Flock be interested in Chrome? My wild guess: the mobile browser market. WebKit (and thus Chrome) have a clear path to netbooks and mobiles over Mozilla. WebKit is dominating the mobile web market, as shown by market share data released by Net Applications recently. Mozilla’s mobile offerings are slow in comin