1852735 - Don't synchronously create the frame tree in PresShell::Initialize.

Status: NEW

(Core :: Layout, defect)

Comment 1

[Emilio Cobos Álvarez [:emilio]]

Attachment: Bug 1852735 - Don't synchronously create the frame tree in PresShell::Initialize. r=smaug,#layout

There's no real need to do so. This can force synchronous styling.

Instead delay until the next flush happens, as we'd otherwise do. We
already don't synchronously reflow.

Comment 2

[Emilio Cobos Álvarez [:emilio]]

https://treeherder.mozilla.org/perfherder/compare?originalProject=try&originalRevision=fdd0355844ed8a00bb44740d56ec392f2613f5ac&newProject=try&newRevision=be8624b9d686d4211d28b3ddb59f8fe6778b2200&page=1&framework=13