The default resource tracking has more overhead than is necessary, so the plan is to just add lighter weight callbacks to InspectorTimelineAgent with just enough information to display a pill box on the timeline. If resource tracking is enabled, the UI can use the identifier to cross-link to give users more detail about a particular resource. (cleaning up a patch now)
Created attachment 42404 [details] Proposed implementation for resources in the timeline. Let me know what you guys think of this approach.
Created attachment 42412 [details] Fixes some issues.
Comment on attachment 42412 [details] Fixes some issues. I'll land this, since TimelineAgent.js will conflict with another cq+ change.
Created attachment 42485 [details] Updates and resolves the conflicts.
Comment on attachment 42485 [details] Updates and resolves the conflicts. Clearing flags on attachment: 42485 Committed r50515: <http://trac.webkit.org/changeset/50515>
All reviewed patches have been landed. Closing bug.