WordPress at a glance
filter is not described

comment_row_actions filter-hook . WP 2.6.0

Filters the action links displayed for each comment in the 'Recent Comments' dashboard widget.

Usage

add_filter( 'comment_row_actions', 'filter_function_name_3262', 10, 2 );
function filter_function_name_3262( $actions, $comment ){
	// filter...

	return $actions;
}
$actions(array)
An array of comment actions.
Default: actions include: 'Approve', 'Unapprove', 'Edit', 'Reply', 'Spam', 'Delete', and 'Trash'
$comment(WP_Comment)
The comment object.

Where the hook is called

_wp_dashboard_recent_comments_row()
WP_Comments_List_Table::handle_row_actions()
wp-admin/includes/dashboard.php 657
$actions = apply_filters( 'comment_row_actions', array_filter($actions), $comment );
wp-admin/includes/class-wp-comments-list-table.php 599
$actions = apply_filters( 'comment_row_actions', array_filter( $actions ), $comment );

Where the hook is used (in WP core)

Does not used.