Update cros-disks DBus service constants.

This CL updates cros-disks DBus service constants as follows:
- Add 'DEVICE_MEDIA_DVD' to DeviceMediaType enum.
- Remove 'DeviceIsOpticalDisc' property.

BUG=chromium-os:30383
TEST=emerge-x86-mario system_api

Change-Id: Ic8fc43519c2fc5437f55d5f466ec682b013aa22c
1 file changed
tree: 5c6926a9e81d0b9bacb71ccf3928f02edd571b47
  1. dbus/
  2. window_manager/
  3. README