Allow UmaHistogramEnumeration to be used with enum classes.

This change allows the UmaHistogramEnumeration function to be used with
enum classes and not produce compile errors.

BUG=None

Review-Url: https://codereview.chromium.org/2801613002
Cr-Commit-Position: refs/heads/master@{#462401}


CrOS-Libchrome-Original-Commit: 1392ff9f43c86c539e53e698674693ef11c029da
1 file changed
tree: d1f15deff91bcdd65233a67d77975be268ca1f4e
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/