Was lost when we converted it from a PopupTool
in I81d217bc1ab9.
Also visualeditor-help-title is unused since that commit,
and remove debugging code.
Change-Id: Ic1d40bac8ef76fbb6f009dd8cecec8dc74c1aa4b
The popup contains three buttons, one of which already exists
in core as a tool. By converting them all to tools we can reduce
some duplication, and better integrate with other features
that use the tool factory, such as HelpCompletionAction.
Bug: T339153
Change-Id: I81d217bc1ab9a1a6a9bf7c7ad588c2a3216b10db
