The Profiler is being integrated into the Timeline. But older iOS devices don't have the backend support for it. So we need to support using the old on-demand profiler on these devices.
<rdar://problem/15911208>
Any chance for this anymore? looks like Legacy Profiler was removed in bug 136462
The Profiler is still exposed in the Timeline panel for iOS 8 devices under the JavaScript & Events timeline. or are you asking about iOS 7 and earlier?
yeah, iOS 7 and earlier. right now we have to run Safari 7.0 in a VM to profile iOS 7, and iOS 7 still has a big enough user base that we have to support it. i really like the new profiles for iOS 8, though.