Electron Releases

Description of Change

Four small main-process crash fixes, each with a crash-case fixture (except the serial one, which needs hardware to exercise):

• ElectronWebUIControllerFactory matched WebUI pages by host only, so navigating a window to e.g. http://accessibility/ was treated as a WebUI navigation and hit NOTREACHED in RenderFrameHostImpl::AllowBindings. It now also requires chrome:// (or devtools:// for the DevTools host).
• With session.registerLocalAIHandler() set, a LanguageModel call from a Worker reached ProxyingAIManager with no RenderFrameHost and dereferenced it. Such requests are now reported as unavailable.
• Extension background pages get api::WebContents as their delegate but never had a WebContentsPermissionHelper, so navigator.mediaDevices.* (and pointer/keyboard lock) from a background page dereferenced null. The helper is now created for every WebContents that api::WebContents adopts.
• SerialChooserContext::RevokePortPermissionWebInitiated dereferenced port_info_.end() when SerialPort.forget() was called for a port the context no longer knew about (e.g. after the device was unplugged).

Checklist

• PR description included
• npm test passes
• tests are changed or added

Release Notes

Notes: Fixed main process crashes when navigating to http://accessibility/ or http://devtools/, when using the LanguageModel API from a Worker with a local AI handler registered, when an extension background page used navigator.mediaDevices, and when calling SerialPort.forget() for a disconnected device.