Worked on denoland/chromium_build to enable and refine cross-platform Glic build and test workflows. Introduced a new GN build argument to support Glic on macOS, Windows, and Linux, addressing Linux-specific build and CI issues to ensure reliable test execution. Focused on build system configuration, the work included relocating the glic_enabled flag from global features.gni to chrome/common, reducing configuration complexity and mitigating misconfiguration risks. Used GN and build system expertise to improve maintainability and reproducibility across platforms. The changes established a foundation for broader Glic feature gating and streamlined future development, emphasizing robust, maintainable build infrastructure for ongoing work.