Revert "Trimmed the branch to only the stereo_synchronizer sub directory"

This reverts commit 6b57a963354ec51447ba1f7c5260640d98c34dd7.
Rebase from 'upstream'
Trimmed the branch to only the stereo_synchronizer sub directory
Revert "Trimmed the branch to only the stereo_synchronizer sub directory"

This reverts commit 6b9764ebac2ca11e20d87f2264b7932e73c550df.
Rebase from 'upstream' (no changes)
Trimmed the branch to only the stereo_synchronizer sub directory