Tor browser removing various Firefox AI features

Summary

Tor Browser 15.0a4 is now available from the Tor Browser download page and also from our distribution directory. This version includes important security updates to Firefox. Release Candidate If all goes as planned, this will be our last alpha release in the 15.0 series before it is promoted to stable in the last week of October. Next week we will be focusing primarily on QA and ensuring all the various features and scenarios supported in Tor Browser still work as expected. This QA work will be tracked in the following gitlab issues: As we reach the home stretch, now would be a great time to download and try out Tor Browser Alpha! We would appreciate it if the community would evaluate and exercise these following changes: 🤖 Removal of Various AI Features Over the past year Mozilla has been working on integrating various AI features and integrations into Firefox (e.g. the AI chatbot sidebar). Such machine learning systems and platforms are inherently un-auditable from a security and privacy perspective. We also do not want to imply recommendation or promotion of such systems by including them in Tor Browser. Therefore, we have done what we can to remove such features from the browser. ☁️ Rename meek-azure pluggable-transport to just meek In the past, we have used various cloud platform to host meek pluggable-transport backends including Google, Amazon, and Azure. However, as time passed these backends have moved and migrated and thus the cloud provider-specific name has become an historical artifact. Therefore, we have dropped the Azure part of the name and now just call it meek. Let this be a lesson to you about naming things! 🟪 Improved Dark Theme Support in Browser Chrome We have improved the styling for our various Tor Browser-specific UI components for dark browser themes. All of our various purple elements should now look like they belong. 🦊 Removal/Replacement of New Firefox/Mozilla-specific Branding and Features As part of ordinary incremental UI updates over...