157616 2016-05-12 00:52:35 -0700 Web Inspector: 3.8% of timeline recording spent in NavigationSidebarPanel _updateContentOverflowShadowVisibility for background tab 2016-05-12 08:42:55 -0700 1 1 1 Unclassified WebKit Web Inspector WebKit Nightly Build All All RESOLVED FIXED DoNotImportToRadar P2 Normal --- 1 joepeck joepeck bburg commit-queue graouts joepeck mattbaker nvasilyev timothy webkit-bug-importer oldest_to_newest 1192259 0 joepeck 2016-05-12 00:52:35 -0700 * SUMMARY 3.8% of timeline recording spent in NavigationSidebarPanel _updateContentOverflowShadowVisibility for background tab In this case it was the DebuggerSidebarPanel was triggering a bunch of forced layouts. 1192260 1 278707 joepeck 2016-05-12 00:53:21 -0700 Created attachment 278707 [PATCH] Proposed Fix 1192267 2 278712 joepeck 2016-05-12 01:13:01 -0700 Created attachment 278712 [PATCH] Proposed Fix 1192334 3 278712 commit-queue 2016-05-12 08:42:53 -0700 Comment on attachment 278712 [PATCH] Proposed Fix Clearing flags on attachment: 278712 Committed r200773: <http://trac.webkit.org/changeset/200773> 1192335 4 commit-queue 2016-05-12 08:42:55 -0700 All reviewed patches have been landed. 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