Originally this IDL was provided by the Google Update team so that we could use
the On-Demand checking for updates. Now it is copied from the public Omaha
repository with minor modifications. See
http://omaha.googlecode.com/svn/trunk/official/goopdate/omaha3_idl.idl.

This copy is based on http://omaha.googlecode.com/svn/trunk/official/goopdate/omaha3_idl.idl@120
with the following two coclasses removed:

  [
    uuid(___AUTO_GENERATED_GUID___),
    helpstring("GoogleComProxyMachineClass")
  ]
  coclass GoogleComProxyMachineClass {
    [default] interface IUnknown;
  }

  [
    uuid(___AUTO_GENERATED_GUID___),
    helpstring("GoogleComProxyUserClass")
  ]
  coclass GoogleComProxyUserClass {
    [default] interface IUnknown;
  }