I don't know if many of you know about this fix... At least I just found out.
So Chromedriver bug Chrome version must be >= 31 is fixed in version 2.13! Just tested on Android 5.0 and 4.4.4. Works fine.
Resolved issue 845: chromedriver fails with "Chrome version must be >= 31.0.1650.59" on Android 4.4.3 webviews [OS-Android, Pri-1]
See release notes.