buildDir
Replace deprecated `Project.buildDir` [getter](https://docs.gradle.org/current/javadoc/org/gradle/api/Project.html#getBuildDir()) and [setter](https://docs.gradle.org/current/javadoc/org/gradle/api/Project.html#setBuildDir(java.io.File)) uses.
dev/tools
native_driver
**This is a WIP**, and the only reason it is not a draft PR is so that Flutter (Skia) Gold is executed. --- Closes https://github.com/flutter/flutter/issues/148269. Work towards https://github.com/flutter/flutter/issues/148269.