Bug 116949

Summary:	Don't force layout for mouse event hit tests to prevent FOUC
Product:	WebKit	Reporter:	Ryosuke Niwa <rniwa>
Component:	Layout and Rendering	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	barraclough, hyatt, jonlee, kling, koivisto, mjs, simon.fraser
Priority:	P2	Keywords:	BlinkMergeCandidate
Version:	528+ (Nightly build)
Hardware:	Unspecified
OS:	Unspecified

Description Ryosuke Niwa 2013-05-29 02:01:56 PDT

We should probably merge https://chromium.googlesource.com/chromium/blink/+/d5b57e33ccbf9a89912773d1b12374fbc7f715f8

Second try. This time with a different approach to deal with tests. See
the EventSender change (this kinda reverts r150324).

Before the initial document layout, we shouldn't force a layout for
mouse events, because they are not intended for the new document anyway -
the user can't see the document yet! Just ignore those events by making
the hit tests match nothing.

Otherwise, the hit test would force a layout, which is undesirable
because that leads to a flash of an empty document.

Comment 1 Simon Fraser (smfr) 2013-05-29 08:27:26 PDT

I'm dubious about this.