Current trunk fails to build with an error in file_system_directory_database.h due to missing header third_party/leveldatabase/src/include/leveldatabase/db.h. From the SVN log, it seems that leveldb is being copied/moved to leveldatabase "temporarily" to do some re-factoring. Adding \! -path 'third_party/leveldatabase/*' \ allows the build process to complete successfully.
Thanks, fixed in >=www-client/chromium-15.0.861.0