When clicking "stop" on a recording in the performance tool, it can take a bit to actually get, load and render that data. Even worse for console.profiling, as the profiling could've ended via code calling somewhere. We should show something happening to not make it seem like the tools have crashed. * Update RecordingView list item, either when it's selected or not selected. It'll seem to hang on "In progress...". Maybe we can change to "Loading..." or something. * Add a panel on top of all the overview/details view, translucent with "Loading profiler data" or something. This could also probably be used when switching completed recordings for staggering loads in bug 1128758

Not specifically blocking v2.