In this episode¹, I continued the work we had started in Episode 8, by trying to make it so that we don’t hit the network when viewing the source of a page in multi-process Firefox.

It was a little bit of a slog – after some thinking, I decided to undo some of the work we had done in the previous episode, and then I set up the messaging infrastructure for talking to the remote browser in the view source window.

I also rebased and landed a patch that we had written in the previous episode, after fixing up some nits².

Then, I (re)-learned that flipping the “remote” attribute of a browser is not enough in order for it to run out-of-process; I have to remove it from the DOM, and then re-add it. And once it’s been re-added, I have to reload any frame scripts that I had loaded in the previous incarnation of the browser.

Anyhow, by the end of the episode, we were able to view the source from a remote browser inside a remote view source browser!³ That’s a pretty big deal!

Episode Agenda

References

Bug 1025146 – [e10s] Never load the source off of the network when viewing source – Notes

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1. A note that I also tried an experiment where I keep my camera running during the entire session, and place the feed into the bottom right-hand corner of the recording. It looks like there were some synchronization issues between audio and video, which are a bit irritating. Sorry about that! I’ll see what I can do about that. 

http://mikeconley.ca/blog/2015/04/10/the-joy-of-coding-ep-9-more-view-source-hacking/