Implement network process crash recovery for BroadcastChannel

[Chris Dumez]

Implement network process crash recovery for BroadcastChannel. Currently, if the network process crashes and relaunches, pre-existing BroadcastChannels will be broken (communication won't be possible between WebProcesses).

[Chris Dumez]

Created attachment 438247 [details]
Patch

[Darin Adler]

Comment on attachment 438247 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=438247&action=review

> Source/WebKit/WebProcess/WebCoreSupport/WebBroadcastChannelRegistry.cpp:113
> +    for (auto& channelsPerOriginEntry : m_channelsPerOrigin) {
> +        auto& origin = channelsPerOriginEntry.key;
> +        auto& channelsForOrigin = channelsPerOriginEntry.value;

I believe we can write this with de-structuring and save many lines of code:

    for (auto& [origin, channelsForOrigin] : m_channelsPerOrigin) {

But I haven’t tried it. Seems like it would be better if it works.

[Chris Dumez]

Created attachment 438267 [details]
Patch

[EWS]

Committed r282483 (241731@main): <https://commits.webkit.org/241731@main>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 438267 [details].

[Radar WebKit Bug Importer]

<rdar://problem/83176366>