I tried:
sudo dpkg -P unity-scope-gdrive account-plugin-google account-plugin-facebook
sudo apt-get install -f
Which seems to have worked.
Found this solution here:
http://askubuntu.com/questions/621284/unmet-dependencies-when-trying-to-install-kde-plasma-5-3-on-ubuntu-15-04
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You received
Public bug reported:
I was installing kde plasma
ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: kaccounts-providers (not installed)
ProcVersionSignature: Ubuntu 4.4.0-42.62-generic 4.4.21
Uname: Linux 4.4.0-42-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
Date: