Validates arguments on the command line of an XUL application.

 Each validator is registered in the category "command-line-validator".
 The entries in this category are read in alphabetical order, and each
 category value is treated as a service contractid implementing this
 interface.

 By convention, validator with ordinary priority should begin with "m".

 Example:
 Category               Entry          Value
 command-line-validator b-browser      @mozilla.org/browser/clh;1
 command-line-validator m-edit         @mozilla.org/composer/clh;1
 command-line-validator m-irc          @mozilla.org/chatzilla/clh;1
[scriptable, uuid(5ecaa593-7660-4a3a-957a-92d5770671c7)]
interface nsICommandLineValidator : nsISupports

Methods

 Process the command-line validators in the proper order, calling
 "validate()" on each.

 @throws NS_ERROR_ABORT if any validator throws NS_ERROR_ABORT. All other
         errors thrown by validators will be silently ignored.
void validate(in nsICommandLine aCommandLine)