@slightlylate @fronttrends DynaTrace does this. Disclaimer: Haven't tried it since they got bought. http://www.compuware.com/application-performance-management/ajax-performance-testing.html …
RT @fronttrends Hi @IE, can we have Paint/Reflow Dev Tools today to debug performance? Please. Thanks! #fronttrends
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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& Web Standards TL; Blink API OWNER
Named PWAs w/
DMs open. Tweets my own; press@google.com for official comms.