Clean up / optimize call sites constructing vectors
https://bugs.webkit.org/show_bug.cgi?id=236748
Reviewed by Dean Jackson.
Clean up / optimize call sites constructing vectors:
- Use Vector::map() / WTF::map() where appropriate
Source/JavaScriptCore:
- Replace Vector::reserveCapacity() with Vector::reserveInitialCapacity()
where appropriate
- Replace Vector::append() with Vector::uncheckedAppend() where appropriate
- Leverage the fact that Vector<Ref<Foo>> is now copyable (Because Ref<> now has
a copy constructor)
- Call crossThreadCopy() to isolate-copy a Vector() without iterating.
- Leverage Vector constructor that takes in an intialization list in more cases
- Leverage Vector::from() in more cases to simplify vector construction in some
case.
- Drop unnecessary calls to Vector::reserve*Capacity() before calling
Vector::append(T*, size_t) since the append() implementation already does this
for us.
- Leverage copyToVector() and copyToVectorOf<> in more cases
- Call shrinkToFit() in some cases where we reserve capacity and then append()
but may not append() as much as we reserved.
* b3/air/AirCode.cpp:
(JSC::B3::Air::Code::setNumEntrypoints):
* bytecompiler/NodesCodegen.cpp:
(JSC::ArrayPatternNode::emitDirectBinding):
* dfg/DFGInPlaceAbstractState.cpp:
(JSC::DFG::setLiveValues):
* dfg/DFGLivenessAnalysisPhase.cpp:
* dfg/DFGScoreBoard.h:
(JSC::DFG::ScoreBoard::ScoreBoard):
* inspector/agents/InspectorDebuggerAgent.cpp:
(Inspector::parseBreakpointOptions):
* inspector/remote/socket/RemoteInspectorMessageParser.cpp:
(Inspector::MessageParser::pushReceivedData):
* parser/VariableEnvironment.cpp:
(JSC::CompactTDZEnvironment::CompactTDZEnvironment):
* wasm/WasmWorklist.cpp:
(JSC::Wasm::Worklist::Worklist):
Source/WebCore:
- Replace Vector::reserveCapacity() with Vector::reserveInitialCapacity()
where appropriate
- Replace Vector::append() with Vector::uncheckedAppend() where appropriate
- Leverage the fact that Vector<Ref<Foo>> is now copyable (Because Ref<> now has
a copy constructor)
- Call crossThreadCopy() to isolate-copy a Vector() without iterating.
- Leverage Vector constructor that takes in an intialization list in more cases
- Leverage Vector::from() in more cases to simplify vector construction in some
case.
- Drop unnecessary calls to Vector::reserve*Capacity() before calling
Vector::append(T*, size_t) since the append() implementation already does this
for us.
- Leverage copyToVector() and copyToVectorOf<> in more cases
- Call shrinkToFit() in some cases where we reserve capacity and then append()
but may not append() as much as we reserved.
* Modules/async-clipboard/Clipboard.cpp:
(WebCore::Clipboard::read):
(WebCore::Clipboard::ItemWriter::didSetAllData):
* Modules/encryptedmedia/MediaKeySession.cpp:
(WebCore::MediaKeySession::updateKeyStatuses):
* Modules/entriesapi/FileSystemEntriesCallback.cpp:
(WebCore::FileSystemEntriesCallback::scheduleCallback):
(WebCore::copyVector): Deleted.
* Modules/entriesapi/HTMLInputElementEntriesAPI.cpp:
(WebCore::HTMLInputElementEntriesAPI::webkitEntries):
* Modules/geolocation/GeolocationController.cpp:
(WebCore::GeolocationController::positionChanged):
(WebCore::GeolocationController::errorOccurred):
* Modules/indexeddb/IDBDatabase.cpp:
(WebCore::IDBDatabase::stop):
* Modules/indexeddb/IDBGetAllResult.cpp:
(WebCore::IDBGetAllResult::isolatedCopy):
* Modules/indexeddb/IDBGetResult.cpp:
(WebCore::IDBGetResult::isolatedCopy):
* Modules/indexeddb/IDBKeyPath.cpp:
(WebCore::isolatedCopy): Deleted.
* Modules/indexeddb/IDBKeyPath.h:
(WebCore::isolatedCopy): Deleted.
* Modules/indexeddb/IDBTransaction.cpp:
(WebCore::IDBTransaction::abortInProgressOperations):
* Modules/indexeddb/client/IDBConnectionProxy.cpp:
(WebCore::IDBClient::removeItemsMatchingCurrentThread):
* Modules/indexeddb/server/MemoryObjectStore.cpp:
(WebCore::IDBServer::MemoryObjectStore::deleteAllIndexes):
* Modules/indexeddb/server/SQLiteIDBCursor.cpp:
(WebCore::IDBServer::SQLiteIDBCursor::currentData):
* Modules/indexeddb/shared/IDBDatabaseInfo.cpp:
(WebCore::IDBDatabaseInfo::objectStoreNames const):
* Modules/indexeddb/shared/IDBIndexInfo.cpp:
(WebCore::IDBIndexInfo::isolatedCopy const):
* Modules/indexeddb/shared/IDBObjectStoreInfo.cpp:
(WebCore::IDBObjectStoreInfo::isolatedCopy const):
(WebCore::IDBObjectStoreInfo::indexNames const):
* Modules/indexeddb/shared/IDBTransactionInfo.cpp:
(WebCore::IDBTransactionInfo::isolatedCopy):
* Modules/indexeddb/shared/IndexKey.cpp:
(WebCore::IndexKey::isolatedCopy const):
* Modules/mediastream/MediaStream.cpp:
(WebCore::MediaStream::clone):
* Modules/mediastream/MediaStreamTrack.cpp:
(WebCore::capabilityStringVector):
* Modules/mediastream/MediaTrackConstraints.cpp:
(WebCore::convertAdvancedToInternalForm):
* Modules/mediastream/SFrameUtils.cpp:
(WebCore::toRbsp):
* Modules/remoteplayback/RemotePlayback.cpp:
(WebCore::RemotePlayback::availabilityChanged):
* Modules/speech/SpeechRecognition.cpp:
(WebCore::SpeechRecognition::didReceiveResult):
* Modules/webauthn/cbor/CBORValue.cpp:
(cbor::CBORValue::CBORValue):
* Modules/webauthn/fido/AuthenticatorGetInfoResponse.cpp:
(fido::toArrayValue):
* Modules/webauthn/fido/DeviceRequestConverter.cpp:
(fido::convertParametersToCBOR):
* Modules/webauthn/fido/Pin.cpp:
(fido::pin::encodeRawPublicKey):
* Modules/webdatabase/DatabaseTracker.cpp:
(WebCore::DatabaseTracker::databaseNames):
(WebCore::isolatedCopy): Deleted.
* accessibility/AXObjectCache.cpp:
(WebCore::AXObjectCache::notificationPostTimerFired):
* accessibility/isolatedtree/AXIsolatedObject.cpp:
(WebCore::AXIsolatedObject::setMathscripts):
(WebCore::AXIsolatedObject::setObjectVectorProperty):
* accessibility/isolatedtree/AXIsolatedTree.cpp:
(WebCore::AXIsolatedTree::objectsForIDs const):
(WebCore::AXIsolatedTree::collectNodeChangesForSubtree):
* animation/CSSPropertyAnimation.cpp:
(WebCore::CSSPropertyAnimationWrapperMap::CSSPropertyAnimationWrapperMap):
* bindings/js/SerializedScriptValue.cpp:
(WebCore::CloneDeserializer::readString):
(WebCore::SerializedScriptValue::blobURLs const):
* crypto/mac/CryptoAlgorithmECDSAMac.cpp:
(WebCore::signECDSA):
(WebCore::verifyECDSA):
* crypto/mac/CryptoKeyECMac.cpp:
(WebCore::CryptoKeyEC::platformExportSpki const):
(WebCore::CryptoKeyEC::platformExportPkcs8 const):
* crypto/mac/CryptoKeyRSAMac.cpp:
(WebCore::CryptoKeyRSA::exportSpki const):
(WebCore::CryptoKeyRSA::exportPkcs8 const):
* css/CSSBasicShapes.cpp:
(WebCore::CSSBasicShapePolygon::cssText const):
* css/CSSComputedStyleDeclaration.cpp:
(WebCore::ComputedStyleExtractor::copyPropertiesInSet):
(WebCore::ComputedStyleExtractor::copyProperties):
* css/CSSFontFace.cpp:
(WebCore::iterateClients):
* css/CSSFontFaceSet.cpp:
(WebCore::CSSFontFaceSet::matchingFacesExcludingPreinstalledFonts):
(WebCore::CSSFontFaceSet::fontFace):
* css/CSSKeyframesRule.cpp:
(WebCore::StyleRuleKeyframes::StyleRuleKeyframes):
* css/StyleProperties.cpp:
(WebCore::StyleProperties::copyPropertiesInSet const):
(WebCore::DeferredStyleProperties::DeferredStyleProperties):
* css/StyleRule.cpp:
(WebCore::DeferredStyleGroupRuleList::DeferredStyleGroupRuleList):
(WebCore::StyleRuleGroup::StyleRuleGroup):
* css/calc/CSSCalcOperationNode.h:
* css/calc/CSSCalcValue.cpp:
(WebCore::createCSS):
* display/css/DisplayBoxDecorationPainter.cpp:
(WebCore::Display::BorderPainter::clipBorderSidePolygon const):
(WebCore::Display::BorderPainter::drawLineForBoxSide const):
* dom/DOMRectList.cpp:
(WebCore::DOMRectList::DOMRectList):
* dom/Document.cpp:
(WebCore::Document::updateElementsAffectedByMediaQueries):
(WebCore::Document::didAssociateFormControlsTimerFired):
* dom/ElementData.cpp:
(WebCore::UniqueElementData::UniqueElementData):
* dom/EventListenerMap.cpp:
(WebCore::EventListenerMap::eventTypes const):
* dom/TreeScopeOrderedMap.cpp:
(WebCore::TreeScopeOrderedMap::keys const):
* editing/CompositeEditCommand.cpp:
(WebCore::copyMarkers):
* editing/Editor.cpp:
(WebCore::editableTextListsAtPositionInDescendingOrder):
* fileapi/FileList.cpp:
(WebCore::FileList::paths const):
* history/HistoryItem.cpp:
(WebCore::HistoryItem::HistoryItem):
(WebCore::m_formData):
(WebCore::m_identifier):
* html/FileInputType.cpp:
(WebCore::FileInputType::setFiles):
(WebCore::FileInputType::filesChosen):
* html/LinkIconCollector.cpp:
(WebCore::LinkIconCollector::iconsOfTypes):
* html/URLSearchParams.cpp:
(WebCore::URLSearchParams::getAll const):
* layout/formattingContexts/inline/InlineLineBuilder.cpp:
(WebCore::Layout::LineBuilder::layoutInlineContent):
* loader/DocumentLoader.cpp:
(WebCore::DocumentLoader::startIconLoading):
(WebCore::DocumentLoader::setActiveContentRuleListActionPatterns):
* loader/TextTrackLoader.cpp:
(WebCore::TextTrackLoader::getNewCues):
* loader/archive/cf/LegacyWebArchive.cpp:
(WebCore::LegacyWebArchive::createFromSelection):
* page/CaptionUserPreferencesMediaAF.cpp:
(WebCore::CaptionUserPreferencesMediaAF::preferredAudioCharacteristics const):
* page/DOMWindow.cpp:
(WebCore::DOMWindow::dispatchAllPendingBeforeUnloadEvents):
* page/IntersectionObserver.cpp:
(WebCore::IntersectionObserver::create):
* page/Page.cpp:
(WebCore::Page::replaceRangesWithText):
* page/csp/ContentSecurityPolicy.cpp:
(WebCore::ContentSecurityPolicy::responseHeaders const):
* page/csp/ContentSecurityPolicyResponseHeaders.cpp:
(WebCore::ContentSecurityPolicyResponseHeaders::isolatedCopy const):
* page/mac/ImageOverlayControllerMac.mm:
(WebCore::ImageOverlayController::updateDataDetectorHighlights):
* page/mac/ServicesOverlayController.mm:
(WebCore::ServicesOverlayController::buildSelectionHighlight):
(WebCore::ServicesOverlayController::handleClick):
* page/scrolling/AsyncScrollingCoordinator.cpp:
(WebCore::AsyncScrollingCoordinator::childrenOfNode const):
* page/scrolling/ScrollSnapOffsetsInfo.cpp:
(WebCore::convertOffsetInfo):
* platform/Length.cpp:
(WebCore::makeCalculated):
* platform/animation/AnimationList.cpp:
(WebCore::AnimationList::AnimationList):
* platform/cocoa/PlaybackSessionModelMediaElement.mm:
(WebCore::PlaybackSessionModelMediaElement::audioMediaSelectionOptions const):
* platform/encryptedmedia/CDMProxy.cpp:
(WebCore::KeyStore::convertToJSKeyStatusVector const):
* platform/graphics/FloatPolygon.cpp:
(WebCore::FloatPolygon::overlappingEdges const):
* platform/graphics/FloatQuad.cpp:
(WebCore::boundingBoxes):
* platform/graphics/avfoundation/objc/CDMInstanceFairPlayStreamingAVFObjC.mm:
(WebCore::CDMInstanceSessionFairPlayStreamingAVFObjC::updateLicense):
* platform/graphics/ca/TileGrid.cpp:
(WebCore::TileGrid::removeTiles):
(WebCore::TileGrid::removeAllTiles):
* platform/graphics/ca/TileGrid.h:
* platform/graphics/cg/ImageUtilitiesCG.cpp:
(WebCore::findImagesForTranscoding):
(WebCore::transcodeImages):
* platform/graphics/cocoa/FontCacheCoreText.cpp:
(WebCore::findClosestFont):
(WebCore::FontCache::getFontSelectionCapabilitiesInFamily):
* platform/mediastream/RealtimeMediaSource.cpp:
(WebCore::RealtimeMediaSource::fitnessDistance):
* platform/network/CacheValidation.cpp:
(WebCore::collectVaryingRequestHeadersInternal):
* platform/network/FormData.cpp:
(WebCore::FormData::isolatedCopy const):
* platform/network/SocketStreamHandleImpl.cpp:
(WebCore::SocketStreamHandleImpl::platformSendHandshake):
* platform/network/cocoa/NetworkStorageSessionCocoa.mm:
* platform/text/LocaleICU.cpp:
(WebCore::LocaleICU::createLabelVector):
(WebCore::createFallbackMonthLabels):
(WebCore::createFallbackAMPMLabels):
* platform/text/LocaleNone.cpp:
(WebCore::LocaleNone::monthLabels):
(WebCore::LocaleNone::shortMonthLabels):
(WebCore::LocaleNone::timeAMPMLabels):
* platform/text/cocoa/LocaleCocoa.mm:
(WebCore::LocaleCocoa::monthLabels):
(WebCore::LocaleCocoa::shortMonthLabels):
(WebCore::LocaleCocoa::standAloneMonthLabels):
(WebCore::LocaleCocoa::shortStandAloneMonthLabels):
(WebCore::LocaleCocoa::timeAMPMLabels):
* plugins/DOMMimeTypeArray.cpp:
(WebCore::DOMMimeTypeArray::supportedPropertyNames const):
(WebCore::DOMMimeTypeArray::supportedPropertyNames): Deleted.
* plugins/DOMMimeTypeArray.h:
* plugins/DOMPlugin.cpp:
(WebCore::makeMimeTypes):
(WebCore::DOMPlugin::supportedPropertyNames const):
(WebCore::DOMPlugin::supportedPropertyNames): Deleted.
* plugins/DOMPlugin.h:
* plugins/DOMPluginArray.cpp:
(WebCore::DOMPluginArray::supportedPropertyNames const):
(WebCore::DOMPluginArray::supportedPropertyNames): Deleted.
* plugins/DOMPluginArray.h:
* rendering/LayerAncestorClippingStack.cpp:
(WebCore::LayerAncestorClippingStack::LayerAncestorClippingStack):
(WebCore::LayerAncestorClippingStack::compositedClipData const):
* rendering/RenderBoxModelObject.cpp:
(WebCore::RenderBoxModelObject::clipBorderSidePolygon):
* rendering/RenderElement.cpp:
(WebCore::RenderElement::drawLineForBoxSide const):
* rendering/RenderGrid.cpp:
(WebCore::RenderGrid::trackSizesForComputedStyle const):
* style/ClassChangeInvalidation.cpp:
(WebCore::Style::collectClasses):
* style/StyleBuilderConverter.h:
(WebCore::Style::BuilderConverter::convertTo100PercentMinusLength):
* testing/MockCDMFactory.cpp:
(WebCore::MockCDMInstanceSession::updateLicense):
(WebCore::MockCDMInstanceSession::removeSessionData):
* workers/service/server/SWServer.cpp:
(WebCore::SWServer::getRegistrations):
Source/WebKit:
- Replace Vector::reserveCapacity() with Vector::reserveInitialCapacity()
where appropriate
- Replace Vector::append() with Vector::uncheckedAppend() where appropriate
- Leverage the fact that Vector<Ref<Foo>> is now copyable (Because Ref<> now has
a copy constructor)
- Call crossThreadCopy() to isolate-copy a Vector() without iterating.
- Leverage Vector constructor that takes in an intialization list in more cases
- Leverage Vector::from() in more cases to simplify vector construction in some
case.
- Drop unnecessary calls to Vector::reserve*Capacity() before calling
Vector::append(T*, size_t) since the append() implementation already does this
for us.
- Leverage copyToVector() and copyToVectorOf<> in more cases
- Call shrinkToFit() in some cases where we reserve capacity and then append()
but may not append() as much as we reserved.
* NetworkProcess/WebStorage/LocalStorageDatabaseTracker.cpp:
(WebKit::LocalStorageDatabaseTracker::originDetailsCrossThreadCopy):
* NetworkProcess/cache/CacheStorageEngineCaches.cpp:
(WebKit::CacheStorage::Caches::cacheInfos):
* Shared/API/APIArray.cpp:
(API::Array::createStringArray):
(API::Array::copy):
* Shared/API/APIDictionary.cpp:
(API::Dictionary::keys const):
* Shared/UserData.cpp:
(WebKit::transformGraph):
* Shared/WebContextMenuItem.cpp:
(WebKit::WebContextMenuItem::create):
(WebKit::WebContextMenuItem::submenuItemsAsAPIArray const):
* Shared/WebContextMenuItemData.cpp:
(WebKit::kitItems):
(WebKit::coreItems):
* UIProcess/API/APIWebAuthenticationPanel.cpp:
(API::WebAuthenticationPanel::WebAuthenticationPanel):
* UIProcess/API/APIWebsitePolicies.cpp:
(API::WebsitePolicies::copy const):
(API::WebsitePolicies::data):
* UIProcess/API/C/WKPage.cpp:
(API::toAPIObjectVector):
(WKPageSetPageContextMenuClient):
(WKPageSetPageFindMatchesClient):
(WKPageSetPageLoaderClient):
* UIProcess/Cocoa/VideoFullscreenManagerProxy.mm:
(WebKit::VideoFullscreenManagerProxy::forEachSession):
* UIProcess/Gamepad/UIGamepadProvider.cpp:
(WebKit::UIGamepadProvider::snapshotGamepads):
* UIProcess/Network/NetworkProcessProxy.cpp:
(WebKit::NetworkProcessProxy::allNetworkProcesses):
(WebKit::NetworkProcessProxy::updatePrevalentDomainsToBlockCookiesFor):
* UIProcess/Notifications/WebNotificationManagerProxy.cpp:
(WebKit::WebNotificationManagerProxy::providerDidRemoveNotificationPolicies):
* UIProcess/Notifications/WebNotificationProvider.cpp:
(WebKit::WebNotificationProvider::clearNotifications):
* UIProcess/StatisticsRequest.cpp:
(WebKit::StatisticsRequest::completedRequest):
* UIProcess/UserContent/WebUserContentControllerProxy.cpp:
(WebKit::WebUserContentControllerProxy::removeAllUserScripts):
(WebKit::WebUserContentControllerProxy::removeAllUserStyleSheets):
* UIProcess/WebAuthentication/Cocoa/WebAuthenticationPanelClient.mm:
(WebKit::WebAuthenticationPanelClient::selectAssertionResponse const):
* UIProcess/WebAuthentication/fido/CtapAuthenticator.cpp:
(WebKit::CtapAuthenticator::continueGetNextAssertionAfterResponseReceived):
* UIProcess/WebBackForwardList.cpp:
(WebKit::WebBackForwardList::addItem):
(WebKit::WebBackForwardList::clear):
(WebKit::WebBackForwardList::restoreFromState):
* UIProcess/WebPageProxy.cpp:
(WebKit::WebPageProxy::runJavaScriptInFrameInScriptWorld):
(WebKit::WebPageProxy::speechSynthesisVoiceList):
* UIProcess/WebsiteData/WebsiteDataStore.cpp:
(WebKit::WebsiteDataStore::fetchDataAndApply):
(WebKit::WebsiteDataStore::parametersFromEachWebsiteDataStore):
* UIProcess/mac/WKTextFinderClient.mm:
(-[WKTextFinderClient replaceMatches:withString:inSelectionOnly:resultCollector:]):
* WebProcess/GPU/media/RemoteRemoteCommandListener.cpp:
(WebKit::RemoteRemoteCommandListener::updateSupportedCommands):
* WebProcess/InjectedBundle/API/c/WKBundlePage.cpp:
(contextMenuItems):
(WKBundlePageCopyOriginsWithApplicationCache):
* WebProcess/InjectedBundle/InjectedBundlePageContextMenuClient.cpp:
(WebKit::InjectedBundlePageContextMenuClient::getCustomMenuFromDefaultItems):
* WebProcess/InjectedBundle/InjectedBundlePageFormClient.cpp:
(WebKit::InjectedBundlePageFormClient::didAssociateFormControls):
* WebProcess/Network/WebSocketStream.cpp:
(WebKit::WebSocketStream::networkProcessCrashed):
* WebProcess/Network/webrtc/WebRTCResolver.cpp:
(WebKit::WebRTCResolver::setResolvedAddress):
* WebProcess/WebCoreSupport/WebResourceLoadObserver.cpp:
(WebKit::WebResourceLoadObserver::takeStatistics):
* WebProcess/WebPage/FindController.cpp:
(WebKit::FindController::replaceMatches):
* WebProcess/WebPage/RemoteLayerTree/PlatformCAAnimationRemote.mm:
(WebKit::toKeyframeValueVector):
(WebKit::PlatformCAAnimationRemote::setValues):
(WebKit::PlatformCAAnimationRemote::setTimingFunctions):
* WebProcess/WebPage/ViewGestureGeometryCollector.cpp:
(WebKit::ViewGestureGeometryCollector::computeTextLegibilityScales):
* WebProcess/WebPage/WebPage.cpp:
(WebKit::WebPage::trackedRepaintRects):
(WebKit::dumpHistoryItem):
Source/WTF:
- Replace Vector::reserveCapacity() with Vector::reserveInitialCapacity()
where appropriate
- Replace Vector::append() with Vector::uncheckedAppend() where appropriate
- Leverage the fact that Vector<Ref<Foo>> is now copyable (Because Ref<> now has
a copy constructor)
- Call crossThreadCopy() to isolate-copy a Vector() without iterating.
- Leverage Vector constructor that takes in an intialization list in more cases
- Leverage Vector::from() in more cases to simplify vector construction in some
case.
- Drop unnecessary calls to Vector::reserve*Capacity() before calling
Vector::append(T*, size_t) since the append() implementation already does this
for us.
- Leverage copyToVector() and copyToVectorOf<> in more cases
- Call shrinkToFit() in some cases where we reserve capacity and then append()
but may not append() as much as we reserved.
* wtf/Language.cpp:
(WTF::userPreferredLanguages):
(WTF::isolatedCopy): Deleted.
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@290026 268f45cc-cd09-0410-ab3c-d52691b4dbfc
diff --git a/Source/WebCore/css/StyleRule.cpp b/Source/WebCore/css/StyleRule.cpp
index 63d24ed..1d9ee7d 100644
--- a/Source/WebCore/css/StyleRule.cpp
+++ b/Source/WebCore/css/StyleRule.cpp
@@ -369,7 +369,6 @@
: m_parser(parser)
{
size_t length = range.end() - range.begin();
- m_tokens.reserveCapacity(length);
m_tokens.append(range.begin(), length);
}
@@ -399,10 +398,8 @@
StyleRuleGroup::StyleRuleGroup(const StyleRuleGroup& o)
: StyleRuleBase(o)
+ , m_childRules(o.childRules().map([](auto& rule) -> RefPtr<StyleRuleBase> { return rule->copy(); }))
{
- m_childRules.reserveInitialCapacity(o.childRules().size());
- for (auto& childRule : o.childRules())
- m_childRules.uncheckedAppend(childRule->copy());
}
const Vector<RefPtr<StyleRuleBase>>& StyleRuleGroup::childRules() const
