Reduce use of downcast<>() in rendering/svg code

[cdumez]

55b0823

Reduce use of downcast<>() in rendering/svg code
https://bugs.webkit.org/show_bug.cgi?id=266792

Reviewed by Simon Fraser.

* Source/WebCore/rendering/svg/RenderSVGGradientStop.cpp:
(WebCore::RenderSVGGradientStop::gradientElement):
* Source/WebCore/rendering/svg/RenderSVGImage.cpp:
(WebCore::RenderSVGImage::paintIntoRect):
* Source/WebCore/rendering/svg/RenderSVGModelObject.cpp:
(WebCore::RenderSVGModelObject::checkIntersection):
(WebCore::RenderSVGModelObject::checkEnclosure):
* Source/WebCore/rendering/svg/RenderSVGResourceClipper.cpp:
(WebCore::RenderSVGResourceClipper::applyPathClipping):
* Source/WebCore/rendering/svg/RenderSVGText.cpp:
(WebCore::collectLayoutAttributes):
(WebCore::findPreviousAndNextAttributes):
(WebCore::updateFontInAllDescendants):
* Source/WebCore/rendering/svg/RenderSVGTransformableContainer.cpp:
(WebCore::associatedUseElement):
* Source/WebCore/rendering/svg/RenderSVGViewportContainer.cpp:
(WebCore::RenderSVGViewportContainer::computeViewportSize const):
* Source/WebCore/rendering/svg/SVGBoundingBoxComputation.cpp:
(WebCore::SVGBoundingBoxComputation::handleShapeOrTextOrInline const):
(WebCore::SVGBoundingBoxComputation::handleRootOrContainer const):
* Source/WebCore/rendering/svg/SVGContainerLayout.cpp:
(WebCore::SVGContainerLayout::layoutChildren):
(WebCore::SVGContainerLayout::positionChildrenRelativeToContainer):
(WebCore::SVGContainerLayout::transformToRootChanged):
* Source/WebCore/rendering/svg/SVGInlineFlowBox.cpp:
(WebCore::SVGInlineFlowBox::paintSelectionBackground):
(WebCore::SVGInlineFlowBox::calculateBoundaries const):
* Source/WebCore/rendering/svg/SVGInlineTextBox.cpp:
(WebCore::SVGInlineTextBox::paint):
* Source/WebCore/rendering/svg/SVGPathData.cpp:
(WebCore::pathFromCircleElement):
(WebCore::pathFromEllipseElement):
(WebCore::pathFromLineElement):
(WebCore::pathFromPathElement):
(WebCore::pathFromPolygonElement):
(WebCore::pathFromPolylineElement):
(WebCore::pathFromRectElement):
(WebCore::pathFromUseElement):
(WebCore::pathFromGraphicsElement):
* Source/WebCore/rendering/svg/SVGRenderSupport.cpp:
(WebCore::SVGRenderSupport::localToParentTransform):
(WebCore::SVGRenderSupport::checkForSVGRepaintDuringLayout):
(WebCore::updateObjectBoundingBox):
(WebCore::SVGRenderSupport::computeContainerBoundingBoxes):
(WebCore::SVGRenderSupport::computeContainerStrokeBoundingBox):
(WebCore::layoutSizeOfNearestViewportChanged):
(WebCore::SVGRenderSupport::transformToRootChanged):
(WebCore::SVGRenderSupport::layoutChildren):
(WebCore::isPointInCSSClippingArea):
(WebCore::SVGRenderSupport::clipContextToCSSClippingArea):
(WebCore::SVGRenderSupport::applyStrokeStyleToContext):
(WebCore::SVGRenderSupport::calculateApproximateStrokeBoundingBox):
* Source/WebCore/rendering/svg/SVGRenderTreeAsText.cpp:
(WebCore::writeSVGPaintingResource):
(WebCore::writeSVGStrokePaintingResource):
(WebCore::writeSVGPaintingFeatures):
(WebCore::writeSVGGraphicsElement):
(WebCore::writeSVGInlineTextBoxes):
(WebCore::writeResources):
* Source/WebCore/rendering/svg/SVGRenderingContext.cpp:
(WebCore::SVGRenderingContext::prepareToRenderSVGContent):
* Source/WebCore/rendering/svg/SVGResources.cpp:
(WebCore::targetReferenceFromResource):
(WebCore::SVGResources::buildCachedResources):
* Source/WebCore/rendering/svg/SVGResourcesCache.cpp:
(WebCore::SVGResourcesCache::resourceDestroyed):
* Source/WebCore/rendering/svg/SVGResourcesCycleSolver.cpp:
(WebCore::SVGResourcesCycleSolver::resourceContainsCycles):
(WebCore::SVGResourcesCycleSolver::resolveCycles):

Canonical link: https://commits.webkit.org/272445@main

706b5a6

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

[webkit-early-warning-system]

EWS run on current version of this PR (hash 706b5a6)

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

[webkit-commit-queue]

Committed 272445@main (55b0823): https://commits.webkit.org/272445@main

Reviewed commits have been landed. Closing PR #22178 and removing active labels.