# FIXME: Add support for global settings.
# FIXME: Add support for custom getters/setters.

defaultTextEncodingName:
  type: String
ftpDirectoryTemplatePath:
  type: String
localStorageDatabasePath:
  type: String
editableLinkBehavior:
  type: EditableLinkBehavior
  initial: EditableLinkDefaultBehavior
textDirectionSubmenuInclusionBehavior:
  type: TextDirectionSubmenuInclusionBehavior
  initial: TextDirectionSubmenuAutomaticallyIncluded
pdfImageCachingPolicy:
  type: PDFImageCachingPolicy
  initial: PDFImageCachingDefault
passwordEchoDurationInSeconds:
  type: double
  initial: 1

# Sets the magnification value for validation message timer.  If the
# magnification value is N, a validation message disappears automatically after
# <message length> * N / 1000 seconds.  If N is equal to or less than 0, a
# validation message doesn't disappears automaticaly.
validationMessageTimerMagnification:
  type: int
  initial: 50

# Number of pixels below which 2D canvas is rendered in software
# even if hardware acceleration is enabled.
# Hardware acceleration is useful for large canvases where it can avoid the
# pixel bandwidth between the CPU and GPU. But GPU acceleration comes at
# a price - extra back-buffer and texture copy. Small canvases are also
# widely used for stylized fonts. Anti-aliasing text in hardware at that
# scale is generally slower. So below a certain size it is better to
# draw canvas in software.
minimumAccelerated2dCanvasSize:
  type: int
  initial: 257*256

maximumAccelerated2dCanvasSize:
  type: unsigned
  initial: 5120*2880

layoutFallbackWidth:
  type: int
  initial: 980
deviceWidth:
  type: int
  initial: 0
deviceHeight:
  type: int
  initial: 0

disallowSyncXHRDuringPageDismissalEnabled:
  type: bool
  initial: true

# Allow clients concerned with memory consumption to set a quota on session storage
# since the memory used won't be released until the Page is destroyed.
sessionStorageQuota:
  type: unsigned
  initial: StorageMap::noQuota

minimumFontSize:
  type: int
  initial: 0
  onChange: setNeedsRecalcStyleInAllFrames
minimumLogicalFontSize:
  type: int
  initial: 0
  onChange: setNeedsRecalcStyleInAllFrames
defaultFontSize:
  type: int
  initial: 16
  onChange: setNeedsRecalcStyleInAllFrames
defaultFixedFontSize:
  type: int
  initial: 13
  onChange: setNeedsRecalcStyleInAllFrames

editingBehaviorType:
  type: EditingBehaviorType
  initial: editingBehaviorTypeForPlatform()
maximumHTMLParserDOMTreeDepth:
  type: unsigned
  initial: defaultMaximumHTMLParserDOMTreeDepth

# This setting only affects site icon image loading if loadsImagesAutomatically setting is false and this setting is true.
# All other permutations still heed loadsImagesAutomatically setting.
loadsSiteIconsIgnoringImageLoadingSetting:
  initial: false

caretBrowsingEnabled:
  initial: false
preventKeyboardDOMEventDispatch:
  initial: false
localStorageEnabled:
  initial: false
allowUniversalAccessFromFileURLs:
  initial: true
allowFileAccessFromFileURLs:
  initial: true
allowSettingAnyXHRHeaderFromFileURLs:
  initial: false
allowCrossOriginSubresourcesToAskForCredentials:
  initial: false
needsStorageAccessFromFileURLsQuirk:
  initial: true
needsFrameNameFallbackToIdQuirk:
  initial: false
useAnonymousModeWhenFetchingMaskImages:
  initial: true
javaScriptCanOpenWindowsAutomatically:
  initial: false
javaScriptCanAccessClipboard:
  initial: false
shouldPrintBackgrounds:
  initial: false
clipboardAccessPolicy:
  type: ClipboardAccessPolicy
  initial: ClipboardAccessPolicy::RequiresUserGesture
asyncClipboardAPIEnabled:
  initial: false

textAreasAreResizable:
  initial: false
  onChange: setNeedsRecalcStyleInAllFrames
authorAndUserStylesEnabled:
  initial: true
  onChange: setNeedsRecalcStyleInAllFrames
  inspectorOverride: true
userStyleSheetLocation:
  type: URL
  onChange: userStyleSheetLocationChanged
acceleratedCompositingEnabled:
  initial: true
  onChange: setNeedsRecalcStyleInAllFrames
acceleratedCompositedAnimationsEnabled:
  initial: true
  onChange: setNeedsRecalcStyleInAllFrames
showDebugBorders:
  initial: false
  onChange: setNeedsRecalcStyleInAllFrames
  inspectorOverride: true
showRepaintCounter:
  initial: false
  onChange: setNeedsRecalcStyleInAllFrames
  inspectorOverride: true
visibleDebugOverlayRegions:
  type: DebugOverlayRegions
  initial: 0
showTiledScrollingIndicator:
  initial: false
resourceUsageOverlayVisible:
  initial: false
  onChange: resourceUsageOverlayVisibleChanged
  condition: RESOURCE_USAGE
disableScreenSizeOverride:
  initial: false

googleAntiFlickerOptimizationQuirkEnabled:
  initial: true

# This is a quirk we are pro-actively applying to old applications. It changes keyboard event dispatching,
# making keyIdentifier available on keypress events, making charCode available on keydown/keyup events,
# and getting keypress dispatched in more cases.
needsKeyboardEventDisambiguationQuirks:
  initial: false

# This is an iOS-specific quirk. Unlike Mac, keyboard operations are asynchronous and hence a DOM update as
# a result of text insertion or deletion does not occur within the same event loop iteration as a dispatched
# DOM keydown event. Some sites, notably Google Sheets, schedule timers on keypress and expect on a DOM update
# to have occurred on expiration. When enabled, this quirk puts all such scheduled timers in a holding tank
# until the keyboard performs the insertion or deletion. This gives Google Sheets the illusion that the DOM
# update happened within the same event loop iteration that the keypress event was dispatched in.
needsDeferKeyDownAndKeyPressTimersUntilNextEditingCommandQuirk:
  initial: false

treatsAnyTextCSSLinkAsStylesheet:
  initial: false
shrinksStandaloneImagesToFit:
  initial: true
backForwardCacheSupportsPlugins:
  initial: false
showsURLsInToolTips:
  initial: false
showsToolTipOverTruncatedText:
  initial: false
forceFTPDirectoryListings:
  initial: false
developerExtrasEnabled:
  initial: false
scriptMarkupEnabled:
  initial: true
needsSiteSpecificQuirks:
  initial: false
  inspectorOverride: true
domTimersThrottlingEnabled:
  initial: true
webArchiveDebugModeEnabled:
  initial: false
  conditional: WEB_ARCHIVE
localFileContentSniffingEnabled:
  initial: false
offlineWebApplicationCacheEnabled:
  initial: false
enforceCSSMIMETypeInNoQuirksMode:
  initial: true
usesEncodingDetector:
  initial: false
canvasUsesAcceleratedDrawing:
  initial: false
acceleratedDrawingEnabled:
  initial: false
displayListDrawingEnabled:
  initial: false
acceleratedFiltersEnabled:
  initial: false
useLegacyTextAlignPositionedElementBehavior:
  initial: false
javaScriptRuntimeFlags:
  type: JSC::RuntimeFlags

# FIXME: This should really be disabled by default as it makes platforms that don't support the feature download files
# they can't use by. Leaving enabled for now to not change existing behavior.
downloadableBinaryFontsEnabled:
  initial: defaultDownloadableBinaryFontsEnabled()

xssAuditorEnabled:
  initial: false
acceleratedCompositingForFixedPositionEnabled:
  initial: defaultAcceleratedCompositingForFixedPositionEnabled
rubberBandingForSubScrollableRegionsEnabled:
  initial: true
  conditional: RUBBER_BANDING

experimentalNotificationsEnabled:
  initial: false
webGLEnabled:
  initial: false
webGLErrorsToConsoleEnabled:
  initial: true
unhandledPromiseRejectionToConsoleEnabled:
  initial: true
forceWebGLUsesLowPower:
  initial: false
accelerated2dCanvasEnabled:
  initial: false
loadDeferringEnabled:
  initial: true
webAudioEnabled:
  initial: false
paginateDuringLayoutEnabled:
  initial: false
fullScreenEnabled:
  initial: false
  conditional: FULLSCREEN_API
asynchronousSpellCheckingEnabled:
  initial: false

# This feature requires an implementation of ValidationMessageClient.
interactiveFormValidationEnabled:
  initial: false

usePreHTML5ParserQuirks:
  initial: false
hyperlinkAuditingEnabled:
  initial: false
crossOriginCheckInGetMatchedCSSRulesDisabled:
  initial: false
forceCompositingMode:
  initial: false
shouldInjectUserScriptsInInitialEmptyDocument:
  initial: false
fixedElementsLayoutRelativeToFrame:
  initial: false
allowDisplayOfInsecureContent:
  initial: false
allowRunningOfInsecureContent:
  initial: false
requiresUserGestureToLoadVideo:
  initial: defaultRequiresUserGestureToLoadVideo
videoPlaybackRequiresUserGesture:
  initial: defaultVideoPlaybackRequiresUserGesture
audioPlaybackRequiresUserGesture:
  initial: defaultAudioPlaybackRequiresUserGesture
mainContentUserGestureOverrideEnabled:
  initial: false
mediaUserGestureInheritsFromDocument:
  initial: false
allowsInlineMediaPlayback:
  initial: defaultAllowsInlineMediaPlayback
allowsInlineMediaPlaybackAfterFullscreen:
  initial: true
inlineMediaPlaybackRequiresPlaysInlineAttribute:
  initial: defaultInlineMediaPlaybackRequiresPlaysInlineAttribute
allowsPictureInPictureMediaPlayback:
  initial: defaultAllowsPictureInPictureMediaPlayback
pictureInPictureAPIEnabled:
  initial: true
mediaControlsScaleWithPageZoom:
  initial: defaultMediaControlsScaleWithPageZoom
invisibleAutoplayNotPermitted:
  initial: false
passwordEchoEnabled:
  initial: false
suppressesIncrementalRendering:
  initial: false
incrementalRenderingSuppressionTimeoutInSeconds:
  type: double
  initial: defaultIncrementalRenderingSuppressionTimeoutInSeconds
backspaceKeyNavigationEnabled:
  initial: true
shouldDisplaySubtitles:
  initial: false
  conditional: VIDEO_TRACK
shouldDisplayCaptions:
  initial: false
  conditional: VIDEO_TRACK
shouldDisplayTextDescriptions:
  initial: false
  conditional: VIDEO_TRACK
genericCueAPIEnabled:
  initial: false
  conditional: VIDEO_TRACK
useGPUProcessForMedia:
  initial: false
  conditional: GPU_PROCESS
scrollingCoordinatorEnabled:
  initial: false
scrollingTreeIncludesFrames:
  initial: defaultScrollingTreeIncludesFrames
scrollAnimatorEnabled:
  initial: true
  conditional: SMOOTH_SCROLLING
forceUpdateScrollbarsOnMainThreadForPerformanceTesting:
  initial: false
notificationsEnabled:
  initial: true

# Some apps needs isLoadingInAPISense to account for active subresource loaders.
needsIsLoadingInAPISenseQuirk:
  initial: false

shouldRespectImageOrientation:
  initial: defaultShouldRespectImageOrientation
imageSubsamplingEnabled:
  initial: defaultImageSubsamplingEnabled
wantsBalancedSetDefersLoadingBehavior:
  initial: false
requestAnimationFrameEnabled:
  initial: true
requestIdleCallbackEnabled:
  initial: false

HTTPSUpgradeEnabled:
  initial: false

thirdPartyIframeRedirectBlockingEnabled:
  initial: true

cookieEnabled:
  initial: true
mediaEnabled:
  initial: defaultMediaEnabled
DOMPasteAllowed:
  initial: false

domPasteAccessRequestsEnabled:
  initial: false

# When enabled, window.blur() does not change focus, and
# window.focus() only changes focus when invoked from the context that
# created the window.
windowFocusRestricted:
  initial: true

diagnosticLoggingEnabled:
  initial: false

plugInSnapshottingEnabled:
  initial: false

snapshotAllPlugIns:
  initial: false

autostartOriginPlugInSnapshottingEnabled:
  initial: true

primaryPlugInSnapshotDetectionEnabled:
  initial: true

maximumPlugInSnapshotAttempts:
  type: unsigned
  initial: 20

frameFlattening:
  type: FrameFlattening
  initial: FrameFlattening::Disabled
  onChange: setNeedsRelayoutAllFrames

asyncFrameScrollingEnabled:
  initial: false
  onChange: setNeedsRelayoutAllFrames

asyncOverflowScrollingEnabled:
  initial: false
  onChange: setNeedsRelayoutAllFrames

legacyOverflowScrollingTouchEnabled:
  initial: true
  onChange: setNeedsRelayoutAllFrames
  conditional: OVERFLOW_SCROLLING_TOUCH

webSecurityEnabled:
  initial: true
  inspectorOverride: true
spatialNavigationEnabled:
  initial: false

autoscrollForDragAndDropEnabled:
  initial: false

unifiedTextCheckerEnabled:
  initial: defaultUnifiedTextCheckerEnabled

logsPageMessagesToSystemConsoleEnabled:
  initial: false

backForwardCacheExpirationInterval:
  type: Seconds
  initial: 30_min

# Some apps could have a default video poster if it is not set.
defaultVideoPosterURL:
  type: String

smartInsertDeleteEnabled:
  initial: defaultSmartInsertDeleteEnabled
selectTrailingWhitespaceEnabled:
  initial: defaultSelectTrailingWhitespaceEnabled
selectionAcrossShadowBoundariesEnabled:
  initial: true

useLegacyBackgroundSizeShorthandBehavior:
  initial: false
fixedBackgroundsPaintRelativeToDocument:
  initial: defaultFixedBackgroundsPaintRelativeToDocument

textAutosizingEnabled:
  initial: defaultTextAutosizingEnabled()
  onChange: setNeedsRecalcStyleInAllFrames
  conditional: TEXT_AUTOSIZING
textAutosizingWindowSizeOverride:
  type: IntSize
  onChange: setNeedsRecalcStyleInAllFrames
  conditional: TEXT_AUTOSIZING
minimumZoomFontSize:
  type: float
  initial: defaultMinimumZoomFontSize()
  conditional: TEXT_AUTOSIZING
textAutosizingUsesIdempotentMode:
  initial: false
  onChange: setNeedsRecalcStyleInAllFrames
  conditional: TEXT_AUTOSIZING

subpixelAntialiasedLayerTextEnabled:
  initial: false
  onChange: setNeedsRecalcStyleInAllFrames
simpleLineLayoutEnabled:
  initial: true
  onChange: setNeedsRecalcStyleInAllFrames
simpleLineLayoutDebugBordersEnabled:
  initial: false
  onChange: setNeedsRecalcStyleInAllFrames

contentChangeObserverEnabled:
  initial: defaultContentChangeObserverEnabled()

subpixelCSSOMElementMetricsEnabled:
  initial: false

useGiantTiles:
  initial: false

mediaSourceEnabled:
  initial: platformDefaultMediaSourceEnabled()
  conditional: MEDIA_SOURCE

sourceBufferChangeTypeEnabled:
  initial: true
  conditional: MEDIA_SOURCE

# FIXME: Rename to allowMultiElementImplicitFormSubmission once we upstream the iOS changes to WebView.mm.
allowMultiElementImplicitSubmission:
  initial: false

allowsAirPlayForMediaPlayback:
  initial: true
  conditional: WIRELESS_PLAYBACK_TARGET

remotePlaybackEnabled:
  initial: true
  conditional: WIRELESS_PLAYBACK_TARGET

shouldConvertPositionStyleOnCopy:
  initial: false

maxParseDuration:
  type: double
  initial: -1
standalone:
  initial: false
telephoneNumberParsingEnabled:
  initial: false
mediaDataLoadsAutomatically:
  initial: defaultMediaDataLoadsAutomatically
alwaysUseAcceleratedOverflowScroll:
  initial: false
imageControlsEnabled:
  initial: false
  conditional: SERVICE_CONTROLS

enableInheritURIQueryComponent:
  initial: false

aggressiveTileRetentionEnabled:
  initial: false
temporaryTileCohortRetentionEnabled:
  initial: true

useImageDocumentForSubframePDF:
  initial: false
dataDetectorTypes:
  type: DataDetectorTypes
  initial: DataDetectorTypeNone
  conditional: DATA_DETECTION

# Allow SourceBuffers to store up to 304MB each, enough for approximately five minutes
# of 1080p video and stereo audio.
maximumSourceBufferSize:
  type: int
  initial: 318767104
  conditional: MEDIA_SOURCE

serviceControlsEnabled:
  initial: false
  conditional: SERVICE_CONTROLS

appleMailPaginationQuirkEnabled:
  initial: false

deferredCSSParserEnabled:
  initial: false

repaintOutsideLayoutEnabled:
  initial: false

httpEquivEnabled:
  initial: true

# Some ports (e.g. iOS) might choose to display attachments inline, regardless of whether the response includes the
# HTTP header "Content-Disposition: attachment". This setting enables a sandbox around these attachments. The sandbox
# enforces all frame sandbox flags (see enum SandboxFlag in SecurityContext.h), and also disables <meta http-equiv>
# processing and subframe loading.
contentDispositionAttachmentSandboxEnabled:
  initial: false

userInterfaceDirectionPolicy:
  type: UserInterfaceDirectionPolicy
  initial: UserInterfaceDirectionPolicy::Content
systemLayoutDirection:
  type: TextDirection
  initial: TextDirection::LTR

allowContentSecurityPolicySourceStarToMatchAnyProtocol:
  initial: false

selectionPaintingWithoutSelectionGapsEnabled:
  initial: false

shouldConvertInvalidURLsToBlank:
  initial: true

springTimingFunctionEnabled:
  initial: false

colorFilterEnabled:
  initial: false
  onChange: setNeedsRecalcStyleInAllFrames

punchOutWhiteBackgroundsInDarkMode:
  initial: false
  onChange: setNeedsRecalcStyleInAllFrames

treatIPAddressAsDomain:
  initial: false

mediaPreloadingEnabled:
  initial: false

layoutViewportHeightExpansionFactor:
  type: double
  initial: 0
  onChange: setNeedsRecalcStyleInAllFrames

# Runtime-enabled features
visualViewportEnabled:
  initial: true
  onChange: setNeedsRecalcStyleInAllFrames

visualViewportAPIEnabled:
  initial: false

syntheticEditingCommandsEnabled:
  initial: true

CSSOMViewScrollingAPIEnabled:
  initial: false

CSSOMViewSmoothScrollingEnabled:
  initial: false

inputEventsEnabled:
  initial: true

quickTimePluginReplacementEnabled:
  initial: defaultQuickTimePluginReplacementEnabled
youTubeFlashPluginReplacementEnabled:
  initial: defaultYouTubeFlashPluginReplacementEnabled

forcedColorsAreInvertedAccessibilityValue:
  type: ForcedAccessibilityValue
  initial: defaultForcedColorsAreInvertedAccessibilityValue
forcedDisplayIsMonochromeAccessibilityValue:
  type: ForcedAccessibilityValue
  initial: defaultForcedDisplayIsMonochromeAccessibilityValue
forcedPrefersReducedMotionAccessibilityValue:
  type: ForcedAccessibilityValue
  initial: defaultForcedPrefersReducedMotionAccessibilityValue
forcedSupportsHighDynamicRangeValue:
  type: ForcedAccessibilityValue
  initial: defaultForcedSupportsHighDynamicRangeValue
  onChange: setNeedsRecalcStyleInAllFrames

largeImageAsyncDecodingEnabled:
  initial: true
animatedImageAsyncDecodingEnabled:
  initial: true
webkitImageReadyEventEnabled:
  initial: false

shouldSuppressTextInputFromEditingDuringProvisionalNavigation:
  initial: false

langAttributeAwareFormControlUIEnabled:
  initial: false

subresourceIntegrityEnabled:
  initial: true

linkPreconnectEnabled:
  initial: false

beaconAPIEnabled:
  initial: false

geolocationFloorLevelEnabled:
  initial: true

constantPropertiesEnabled:
  initial: false

viewportFitEnabled:
  initial: false

allowMediaContentTypesRequiringHardwareSupportAsFallback:
  initial: false

storageAccessAPIEnabled:
  initial: true

timeWithoutMouseMovementBeforeHidingControls:
  type: Seconds
  initial: 3_s

fontFallbackPrefersPictographs:
  initial: false
  onChange: setNeedsRecalcStyleInAllFrames

fontLoadTimingOverride:
  type: FontLoadTimingOverride
  initial: FontLoadTimingOverride::None
shouldIgnoreFontLoadCompletions:
  initial: false

applePayCapabilityDisclosureAllowed:
  conditional: APPLE_PAY
  initial: true
applePayEnabled:
  conditional: APPLE_PAY
  initial: defaultApplePayEnabled
applePayRemoteUIEnabled:
  conditional: APPLE_PAY_REMOTE_UI
  initial: true
paymentRequestEnabled:
  conditional: PAYMENT_REQUEST
  initial: false

javaEnabled:
  initial: false
  getter: isJavaEnabled
javaEnabledForLocalFiles:
  initial: true
  getter: isJavaEnabledForLocalFiles

# Unlike the imagesEnabled setting, this only suppresses the network load of
# the image URL. A cached image will still be rendered if requested.
loadsImagesAutomatically:
  initial: false
  onChange: imagesEnabledChanged
imagesEnabled:
  initial: true
  getter: areImagesEnabled
  onChange: imagesEnabledChanged
  inspectorOverride: true
scriptEnabled:
  initial: false
  getter: isScriptEnabled
  inspectorOverride: true
parserScriptingFlagPolicy:
  type: ParserScriptingFlagPolicy
  initial: ParserScriptingFlagPolicy::OnlyIfScriptIsEnabled
pluginsEnabled:
  initial: false
  getter: arePluginsEnabled
  onChange: pluginsEnabledChanged

usesBackForwardCache:
  initial: false
  onChange: usesBackForwardCacheChanged

dnsPrefetchingEnabled:
  initial: false
  onChange: dnsPrefetchingEnabledChanged

backgroundShouldExtendBeyondPage:
  initial: false
  onChange: backgroundShouldExtendBeyondPageChanged

scrollingPerformanceLoggingEnabled:
  initial: false
  onChange: scrollingPerformanceLoggingEnabledChanged

hiddenPageDOMTimerThrottlingEnabled:
  initial: false
  onChange: hiddenPageDOMTimerThrottlingStateChanged
hiddenPageDOMTimerThrottlingAutoIncreases:
  initial: false
  onChange: hiddenPageDOMTimerThrottlingStateChanged
hiddenPageCSSAnimationSuspensionEnabled:
  initial: false
  onChange: hiddenPageCSSAnimationSuspensionEnabledChanged

storageBlockingPolicy:
  type: SecurityOrigin::StorageBlockingPolicy
  initial: SecurityOrigin::AllowAllStorage
  onChange: storageBlockingPolicyChanged

shouldAllowUserInstalledFonts:
  initial: true
  onChange: setNeedsRecalcStyleInAllFrames

resizeObserverEnabled:
  initial: false
  conditional: RESIZE_OBSERVER

# Only set by Layout Tests.
mediaTypeOverride:
  type: String
  initial: '"screen"'
  onChange: mediaTypeOverrideChanged

animatedImageDebugCanvasDrawingEnabled:
  initial: false

fontRenderingMode:
  type: FontRenderingMode
  initial: FontRenderingMode::Normal

preferMIMETypeForImages:
  initial: false

forcePendingWebGLPolicy:
  initial: false
  getter: isForcePendingWebGLPolicy

mediaKeysStorageDirectory:
  type: String

mediaDeviceIdentifierStorageDirectory:
  type: String
  conditional: MEDIA_STREAM

# FIXME: This quirk is needed because of Radar 4674537 and 5211271. We need to phase it out once Adobe
# can fix the bug from their end.
needsAdobeFrameReloadingQuirk:
  initial: false
  getter: needsAcrobatFrameReloadingQuirk

passiveTouchListenersAsDefaultOnDocument:
  initial: true

touchEventEmulationEnabled:
  initial: false
  getter: isTouchEventEmulationEnabled
  conditional: TOUCH_EVENTS

deviceOrientationEventEnabled:
  type: bool
  initial: true
  conditional: DEVICE_ORIENTATION

deviceOrientationPermissionAPIEnabled:
  type: bool
  initial: false
  conditional: DEVICE_ORIENTATION

shouldEnableTextAutosizingBoost:
  type: bool
  initial: false
  conditional: TEXT_AUTOSIZING
  onChange: shouldEnableTextAutosizingBoostChanged

mediaCapabilitiesEnabled:
  initial: false

mediaCapabilitiesExtensionsEnabled:
  type: bool
  initial: false

hdrMediaCapabilitiesEnabled:
  type: bool
  initial: false

clientCoordinatesRelativeToLayoutViewport:
  initial: false
  onChange: setNeedsRecalcStyleInAllFrames

incompleteImageBorderEnabled:
  initial: false

shouldDeferAsynchronousScriptsUntilAfterDocumentLoad:
  initial: false

shouldIgnoreMetaViewport:
  initial: false

videoQualityIncludesDisplayCompositingEnabled:
  initial: false
  conditional: VIDEO

editableImagesEnabled:
  initial: false

adClickAttributionEnabled:
  initial: false

coreMathMLEnabled:
  initial: false
  onChange: setNeedsRecalcStyleInAllFrames

blockingOfSmallPluginsEnabled:
  initial: true

shouldDecidePolicyBeforeLoadingQuickLookPreview:
  initial: false

shouldDispatchSyntheticMouseEventsWhenModifyingSelection:
  initial: false

shouldDispatchSyntheticMouseOutAfterSyntheticClick:
  initial: false

allowViewportShrinkToFitContent:
  initial: true

webRTCEncryptionEnabled:
  initial: true
  inspectorOverride: true

isThirdPartyCookieBlockingDisabled:
  initial: false

isFirstPartyWebsiteDataRemovalDisabled:
  initial: false

isFirstPartyWebsiteDataRemovalLiveOnTestingEnabled:
  initial: false

isFirstPartyWebsiteDataRemovalReproTestingEnabled:
  initial: false

isLoggedInAPIEnabled:
  initial: false

enterKeyHintEnabled:
  initial: false

legacyGetUserMediaEnabled:
  initial: false
  conditional: MEDIA_STREAM

isInAppBrowserPrivacyEnabled:
  initial: false

isAccessibilityIsolatedTreeEnabled:
  initial: false

aspectRatioOfImgFromWidthAndHeightEnabled:
  initial: false

# Deprecated

iceCandidateFilteringEnabled:
  initial: true
  onChange: iceCandidateFilteringEnabledChanged
  inspectorOverride: true

mockCaptureDevicesEnabled:
  initial: false
  conditional: MEDIA_STREAM
  onChange: mockCaptureDevicesEnabledChanged
  inspectorOverride: true

mediaCaptureRequiresSecureConnection:
  initial: true
  conditional: MEDIA_STREAM
  inspectorOverride: true

shouldUseServiceWorkerShortTimeout:
  initial: false