Bug 246243

Summary:	Have the DrawingAreaProxy control `delegatesScrolling` in the UI process
Product:	WebKit	Reporter:	Simon Fraser (smfr) <simon.fraser>
Component:	WebKit Process Model	Assignee:	Simon Fraser (smfr) <simon.fraser>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	Safari Technology Preview
Hardware:	Unspecified
OS:	Unspecified

Description Simon Fraser (smfr) 2022-10-07 20:44:42 PDT

Move the notion of `delegatesScrolling` from WebPageProxy to DrawingAreaProxy, since this is presentation-related. This was only actually used in RemoteLayerTreeDrawingAreaProxy to control the indicator position, but future patches will make more use of it.

Also have the DrawingAreaProxy be the factory for the RemoteScrollingCoordinatorProxy.

Comment 1 Radar WebKit Bug Importer 2022-10-07 20:45:09 PDT

<rdar://problem/100924685>

Comment 2 Simon Fraser (smfr) 2022-10-07 20:50:24 PDT

Pull request: https://github.com/WebKit/WebKit/pull/5162

Comment 3 EWS 2022-10-10 11:09:28 PDT

Committed 255356@main (263b327294f3): <https://commits.webkit.org/255356@main>

Reviewed commits have been landed. Closing PR #5162 and removing active labels.