[WinCairo][Regression 263118@main] Small viewport does end up in broken screenshots

[mxschmitt]

8ad49cf

[WinCairo][Regression 263118@main] Small viewport does end up in broken screenshots
https://bugs.webkit.org/show_bug.cgi?id=255937

Reviewed by NOBODY (OOPS!).

If a small viewport like 50x50 is used, on Windows it does not get rendered
at all on the window (since its outside of the window). Since still a
WebView::onSizeEvent event gets emitted with 50x0, we want to ignore it
and not use it as an actual window size in the drawing area.
Page.snapshotRect breaks due to that

* Source/WebKit/UIProcess/CoordinatedGraphics/DrawingAreaProxyCoordinatedGraphics.cpp:
(WebKit::DrawingAreaProxyCoordinatedGraphics::sendUpdateGeometry):

8ad49cf

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 wincairo
	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	✅ 🧪 wpe-wk2
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🧪 api-mac	✅ 🛠 gtk
	✅ 🧪 ios-wk2-wpt	✅ 🧪 mac-wk1	✅ 🧪 gtk-wk2
	✅ 🧪 api-ios	✅ 🧪 mac-wk2	❌ 🧪 api-gtk
	✅ 🛠 tv	✅ 🧪 mac-AS-debug-wk2
	✅ 🛠 tv-sim	✅ 🧪 mac-wk2-stress
	✅ 🛠 watch
	✅ 🛠 watch-sim

[webkit-early-warning-system]

EWS run on current version of this PR (hash 8ad49cf)

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 wincairo
	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	✅ 🧪 wpe-wk2
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🧪 api-mac	✅ 🛠 gtk
	✅ 🧪 ios-wk2-wpt	✅ 🧪 mac-wk1	✅ 🧪 gtk-wk2
	✅ 🧪 api-ios	✅ 🧪 mac-wk2	❌ 🧪 api-gtk
	✅ 🛠 tv	✅ 🧪 mac-AS-debug-wk2
	✅ 🛠 tv-sim	✅ 🧪 mac-wk2-stress
	✅ 🛠 watch
	✅ 🛠 watch-sim

[mxschmitt]

FYI, this change was there before.

Not a huge fan of the way I'm fixing it, I feel like we should address it in a better way, there is microsoft/playwright#22633 as a similar bug.

[fujii]

Please use "REGRESSION(263118@main): " in the commit log title.
Do you know the reason why the view size is empty even though the actual window size is 50x50?

[mxschmitt]

Closing for now and we'll adjust our code to have a minimal viewport of 250x250.