idl: Remove comment about _ in idl identifier

The way to handle '_' in identifier is described Web IDL spec.
We don't need a confusing comment as if it comes from our IDL compiler implementation.

Bug: 820353
Change-Id: Iba6c851daa6ae0dc6d690b220a5c757d507e4dc7
Reviewed-by: Kentaro Hara <>
Reviewed-by: Kenichi Ishibashi <>
Commit-Queue: Hitoshi Yoshida <>
Cr-Original-Commit-Position: refs/heads/master@{#565588}
Cr-Mirrored-Commit: 37e2e88d9390b99f8271c05c59c10e26acfeb3f8
1 file changed