fix: use StartUpdating method for PipeWire capturer #39051
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Fixed a crash related to PipeWire capturer by adapting to Chromium's interface changes. Chromium expects a call to `NativeDesktopMediaList::StartUpdating` with an implementation of `DesktopMediaListObserver` for delegated capturers like PipeWire. This interface allows listening to user permission events and listing sources only after the user has made a choice on the permission dialog. The interface has been implemented by an inner class to allow listening to screen and window capture permissions concurrently using two instances of the class. A patch that was resetting the capturer on the first refresh has been changed to exclude PipeWire. PipeWire capturer object will follow the lifecycle of `NativeDesktopMediaList`, as is the case in Chromium. Fixes #37463 Co-authored-by: Athul Iddya <athul@iddya.com>
The PipeWire stream starts after the dialog is dismissed. If the sources are listed immediately afterwards, the thumbnail may not have been generated by that time. Explicitly wait for both thumbnail generation and a selection on the source dialog before listing sources. Co-authored-by: Athul Iddya <athul@iddya.com>
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codebytere
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Backport of #38833
See that PR for details.
Notes: Fixed a crash when listing desktop capture sources on Wayland with PipeWire.