Multiprocess Firefox (e10s)

[lidel]

Electrolysis, also known as e10s, is the next major compatibility change coming to Firefox. In a nutshell, Firefox will run on multiple processes now, running each content tab in a different one. This should improve responsiveness and overall stability, but it also means many add-ons will need to be updated to support this.

We will be talking more about these changes in this blog in the future. For now we recommend you start looking at the available documentation.

– https://blog.mozilla.org/addons/2015/04/08/add-ons-update-63/

[lidel]

First step is to set up TravisCI target that runs tests with e10s enabled:
https://wiki.mozilla.org/Electrolysis#Enabling_and_Disabling_Electrolysis

[lidel]

Running tests with Nightly does not seem to be a worthy effort: cfx builder does not support e10s (running unsigned addon requires setting xpinstall.signatures.required=false etc).

Mozilla mentioned that they will provide an unbranded browser version that has signature verification disabled and can be used for development and tests:

An unbranded version of Firefox 42 should be available when 42 reaches beta.
– https://groups.google.com/forum/#!topic/mozilla.addons.user-experience/GX3yQBS4o6s

I plan to wait for it and update Travis config around that time.

Good news is that I've manually run tests on current Nightly (43.0a1) and all passed.
Seems that chrome shims are enough for it to work without change.

But just in case shims are changed in future, some materials on e10s for future reference:

• https://timtaubert.de/blog/2011/08/firefox-electrolysis-101/
• https://developer.mozilla.org/en-US/Add-ons/SDK/Guides/Multiprocess_Firefox_and_the_SDK
• https://developer.mozilla.org/en-US/Firefox/Multiprocess_Firefox/Cross_Process_Object_Wrappers

[lidel]

Closed by #26