Following on to bug 709971, we should track reflow times in background and foreground tabs separately.
Created attachment 589929 [details] [diff] [review] patch I renamed the histograms so that we can separate old (background/foreground combined) data from new data. Though I don't know if it's worth tracking XUL reflows in background tabs separately. Did it for symmetry, though.
Comment on attachment 589929 [details] [diff] [review] patch r=me