I was able to fix the error by installing some libwayland packages:
sudo apt-get install libwayland-dev-lts-trusty libwayland-egl1-mesa-
lts-trusty
Cheese was working fine for me a few weeks ago, so I'm not sure how
these became uninstalled or why the cheese package didn't require them.
My only guess is that I had been using the Nouveau video driver and
switched to Nvidia because Nouveau doesn't support suspend/resume on my
laptop.
Now when I launch Cheese, it runs, but reports:
There was an error playing video from the webcam
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https://bugs.launchpad.net/bugs/1290099
Title:
libwayland-egl.so error for Cheese (wont start)
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