Patch coming shortly
Created attachment 28993 [details] patch v1
Created attachment 28994 [details] patch v2 Now compiles on Linux, hopefully
Comment on attachment 28994 [details] patch v2 Peter informs me this is just copy/paste code. That seems like a really bad idea. Especially for this volume of code. Can't we use a RenderThemeChromium superclass here?
Comment on attachment 28994 [details] patch v2 Peter says he's about to refactor this as his next patch. So this is a fine intermediate step.
Fixed in r42044.