Contribute if necessary to the list of "Browse" actions which appear in any Input URL chooser for Oxygen.
existingBrowseActions - The existing list of actions.
The first action in the list will be the default one (performed when the drop-down button is clicked).
Note: If a new action is added to the browse action list, a custom icon must be set on the action
for situations when its text is not used for display.
For the Eclipse plugin the instances can be cast to "com.oxygenxml.editor.editors.EclipseActionWrapper"
and obtain the internal Eclipse action. To add a new action, just add it inside a new EclipseActionWrapper instance.
chooser - The chooser which will get called to set the new URL by the custom code after the user has chosen the new URL.