Summary: Waterfall graph in Network tab shows too much whitespace/dead time. There are two issues: 1) The end time keeps growing until stopUpdatingCurrentTime is called, which is done on a 250ms debounce. 2) WebInspector.timelineManager.persistentNetworkTimeline.startTime is used as the zero time, and clearing the grid doesn't affect this value.
<rdar://problem/27622485>
Created attachment 284931 [details] [Patch] Proposed Fix
Comment on attachment 284931 [details] [Patch] Proposed Fix Clearing flags on attachment: 284931 Committed r203986: <http://trac.webkit.org/changeset/203986>
All reviewed patches have been landed. Closing bug.