* Refactor Popup.setVisibleOverride
* Use event to observe visibility changes
* Add setAllVisibleOverride/clearAllVisibleOverride
* Add setAllVisibleOverride/clearAllVisibleOverride cross frame handlers
* Update how visibility is changed
* Wait for next frame to ensure visibility has been updated
* Simplify how parent/child are set
* Remove unused public frameId property
* Change use of getFrame
* Simplify parent access
* Use property for the container
* Remove isProxy
* Public function API parity
* Public property API parity
* Add _invokeSafe function to silently ignore extension unload errors
* Remove "Api" from function names
* Add invokeSafe to Popup
* Don't redundantly set content type to 'unloaded'
* Simplify invoke
* Pass isTerms instead of type
* Update DisplaySearch.setContent to pass argument array
* Simplify argument object structure for setContent
* Move focus and disableHistory level
* Always include focus and disableHistory options
* Change disableHistory to history
* Pass source text to setContent
* Use consistent argument/object field order
* Remove unused previous field
* Combine logic for forward/back navigation
* Remove unused function
* Rename field
* Change extensionUnloaded trigger function
* Update how extension unloaded content is shown
* Ignore certain errors caused by extension unload
* Add _showExtensionUnloaded function
* Wrap internals of updateOptions
* Suppress errors caued by extension unload
* Make the frontend trigger the popup's extensionUnloaded event
* Add support for dynamic message handlers
* Pass messages using crossFrame.invoke instead of contentWindow.postMessage
* Set up async handlers
* Simplify configure call and response
* Create FrameClient and FrameEndpoint
* Use new Frame* classes for Popup=>frame connection
* Update api.sendMessageToFrame and api.broadcastTab to include the sender's frameId
* Update FrameClient to store the frame's frameId
* Change getOrCreatePopup arguments to be an object
* Add ownerFrameId to popup and DisplayFloat
* Refactor DisplayFloat host action invocation
* Use CrossFrameAPI instead of window.postMessage
* Update popup closing functionality on the search page
* Add support for injecting stylesheets into a custom parent node
* Add api.getStylesheetContent
* Add support for injecting a CSS file's content
* Add usePopupShadowDom option
* Use a per-parentNode cache
* Add support for using a shadow DOM wrapper around popup iframes
* Ignore the popup container instead of the frame
* Create member functions for ignoreElements and ignorePoint
* Create addFullscreenChangeEventListener utility
* Move popup creation management into Frontend
* Move getUrl implementation
* Remove old setup
* Remove try/catch block
* Error wrap
* Add prepare call to TextScanner
* Update depth when popup changes
* Refactor how Frontend gets PopupFactory and frameId
* Update popup preview to work
* Update popup preview frame to use the frontend's popup
* Update how nested popups are set up
* Error wrap
* Update how popups are set up on the search page
* Error wrap
* Error unwrap
* Add missing prepare
* Remove use of frontendInitializationData
* Catch and log errors
* Convert api.js into a class instance
* Use new api.* functions
* Fix missing binds
* Group functions with progress callbacks together
* Change style
* Fix API override not working
* Remove unnecessary load of /fg/css/client.css
* Replace dynamicLoader.loadStyles with dynamicLoader.loadStyle
* Replace Popup._injectStylesheet with dynamicLoader.loadStyle
* Remove unused global
* Add default
* Convert function to non-static
* Remove static for private functions
* Replace .call
* Move functions with side effects into a synchronous prepare function
* Rename variables with "container" to "frame" in _initializeFrame
* Rename variables with "container" to "frame"
* Rename getContainer to getFrame
* Rename getContainerRect to getFrameRect
* Organize and simplify
* Fix incorrect change of "popup" => "this"
* Move initial _updateVisibility into prepare()
* Rename PopupProxyHost to PopupFactory
* Update FrontendApiReceiver to support non-async handlers
* Make some functions non-async
* Make setCustomCss non-async
* Make setContentScale non-async
* Remove static
* Rename variables
* Pass frameId into PopupFactory's constructor
* Change FrontendApiReceiver source from popup-proxy-host to popup-factor
* Rename _invokeHostApi to _invoke
* Rename PopupProxy.getHostUrl to getUrl
* Add API function to send a message to a specific frameId in a tab
* Update _windowMessageHandlers to support additional info per handler
* Remove message token
* Add new authorization check
* Set up new initialization handler
* Update initialization
* Remove message token
* Replace 'prepare' with 'configure'
* Create new prepare function
* Change configure guard
* Log errors in onMessage
* Improve popup initialize function
* Clear secret/token in _resetFrame
* Remove backend message token
* Clear src and srcdoc attributes before loading
* Don't treat about:blank unloads as load events
* Validate document.body before use in loadScripts
This also fixes an issue where reject wasn't being passed to loadScriptSentinel.
* Validate document nodes before use in _getSiteColor
* Validate document.body before use in _getViewport
* Validate document.body before use in setContentScale
* Validate document.body before use in docImposterCreate
* Remove and unload the popup frame if an unexpected load occurs
* Remove unused fields
* Only update _injectPromiseComplete if the promise is the most recent one
* Remove redundant this._injectPromise !== null check
* set optionsContext from Frontend
* update Popup+Display options on Frontend change
* remove popup setOptions
* only update DisplayFloat options from Frontend
* fix optionsContext usage
* fix preview frame arguments
* keep Frontend URL up to date
* cache url
* fix preview frame
* trigger modifyingProfileChange in correct places
* remove async from function not using await
* refactor optionsContext in Frontend
