Worked on the denoland/chromium_build repository to streamline the build process by removing an unused jitter tracking header from the build whitelist. This targeted code cleanup reduced dead code and simplified the build graph, laying the groundwork for faster build times and easier future maintenance. The approach focused on build system management and C++ project hygiene, ensuring that obsolete components no longer impacted the build pipeline. By maintaining clear commit messages and traceability, the work demonstrated attention to maintainability and clarity. No major bugs were reported or fixed during this period, with efforts concentrated on improving build efficiency and codebase cleanliness.