Adopt more smart pointers in AXObjectCache.cpp

https://bugs.webkit.org/show_bug.cgi?id=269548
rdar://123066225

Reviewed by Darin Adler.

Adopt more smart pointers in AXObjectCache.cpp, as reported by the static analyzer.

* Source/WebCore/accessibility/AXObjectCache.cpp:
(WebCore::AXObjectCache::focusedImageMapUIElement):
(WebCore::AXObjectCache::focusedObjectForPage):
(WebCore::AXObjectCache::cacheAndInitializeWrapper):
(WebCore::AXObjectCache::getOrCreate):
(WebCore::AXObjectCache::rootObject):
(WebCore::AXObjectCache::setIsolatedTreeRoot):
(WebCore::AXObjectCache::handleTextChanged):
(WebCore::AXObjectCache::handleChildrenChanged):
(WebCore::AXObjectCache::handleMenuOpened):
(WebCore::AXObjectCache::handleLiveRegionCreated):
(WebCore::AXObjectCache::notificationPostTimerFired):
(WebCore::AXObjectCache::postNotification):
(WebCore::AXObjectCache::handleMenuItemSelected):
(WebCore::AXObjectCache::handleTabPanelSelected):
(WebCore::AXObjectCache::onPopoverToggle):
(WebCore::AXObjectCache::onSelectedChanged):
(WebCore::AXObjectCache::onTextCompositionChange):
(WebCore::AXObjectCache::liveRegionChangedNotificationPostTimerFired):
(WebCore::AXObjectCache::focusCurrentModal):
(WebCore::AXObjectCache::handleAriaExpandedChange):
(WebCore::AXObjectCache::handleAttributeChange):
(WebCore::AXObjectCache::handleLabelChanged):
(WebCore::AXObjectCache::protectedDocument const):
(WebCore::AXObjectCache::visiblePositionForTextMarkerData):
(WebCore::AXObjectCache::characterOffsetForTextMarkerData):
(WebCore::characterOffsetsInOrder):
(WebCore::boundaryPoint):
(WebCore::AXObjectCache::textMarkerDataForCharacterOffset):
(WebCore::AXObjectCache::accessibilityObjectForTextMarkerData):
(WebCore::AXObjectCache::textMarkerDataForVisiblePosition):
(WebCore::AXObjectCache::textMarkerDataForFirstPositionInTextControl):
(WebCore::AXObjectCache::nextCharacterOffset):
(WebCore::AXObjectCache::previousCharacterOffset):
(WebCore::AXObjectCache::nextBoundary):
(WebCore::AXObjectCache::previousBoundary):
(WebCore::AXObjectCache::endCharacterOffsetOfParagraph):
(WebCore::AXObjectCache::absoluteCaretBoundsForCharacterOffset):
(WebCore::AXObjectCache::characterOffsetForIndex):
(WebCore::filterListForRemoval):
(WebCore::AXObjectCache::performDeferredCacheUpdate):
(WebCore::AXObjectCache::updateRelationsForTree):
(WebCore::AXObjectCache::addRelation):
* Source/WebCore/accessibility/AXObjectCache.h:
* Source/WebCore/accessibility/AXTextMarker.cpp:
(WebCore::TextMarkerData::TextMarkerData):
(WebCore::AXTextMarker::setNodeIfNeeded const):
(WebCore::AXTextMarker::operator CharacterOffset const):
* Source/WebCore/accessibility/AXTextMarker.h:
* Source/WebCore/accessibility/AccessibilityObject.cpp:
(WebCore::AccessibilityObject::protectedDocument const):
* Source/WebCore/accessibility/AccessibilityObject.h:

Canonical link: https://commits.webkit.org/274894@main