IDL compiler: [EnforceRange] for arguments

Test-only change, since already supported in type handling.

BUG=239771
NOTRY=true
TBR=haraken

Review URL: https://codereview.chromium.org/54233003

git-svn-id: svn://svn.chromium.org/blink/trunk@161033 bbb929c8-8fbe-4397-9dbb-9b2b20218538