This is good news. Microsoft's slow release cadence and insistence that each new browser version will not run on older versions of Windows has causes nothing but pain for us devs. I find it faintly ludicrous that MS was somehow unable to keep pace with Google and Mozilla.
Also, I'm not overly concerned about the reduction in competing browser engines as the companies with a vested interest in the Chromium project should keep it from stagnating into another IE6. I could be wrong though, and they might all become puppet states in the greater Googleocracy.