Worked on stabilizing ARM ChromeOS builds in the denoland/chromium_build repository by addressing an ABI compatibility issue related to the vfp ABI. Focused on build systems and compiler toolchains, the work involved updating the build configuration to detect and utilize the ChromeOS-specific compiler runtime instead of the default Chrome version. This fix, implemented using GN and Python, resolved ABI mismatches that previously caused failures in continuous integration for ChromeOS targets. By ensuring that binaries compiled with the ChromeOS toolchain link against the correct runtime, the changes improved system configuration reliability and reduced build failures for ARM ChromeOS environments.