Worked on enabling XR functionality in the denoland/chromium_build repository by integrating the JXR library into the Chrome codebase. This involved updating Python-based build systems and refining dependency management to ensure stable integration. The approach included modifying tracereferences.py to exclude Android XR system libraries from reference checks, which improved build reliability for XR features. By focusing on Python and leveraging expertise in build systems, the work established a foundation for future XR development and aligned with the broader XR roadmap. The changes addressed both immediate technical requirements and long-term maintainability, supporting ongoing enhancements to Chrome’s XR capabilities.