Bug 220331

I am getting two redefinition errors for webkitgtk-2.30.3.

```
salewski@nuc ~/gintrotest/tests $ grep -A12 "_ContextMenu" /usr/share/gir-1.0/WebKit2WebExtension-4.0.gir 
    <record name="_ContextMenu" c:type="_WebKitContextMenu">
      <source-position filename="webkitgtk-2.30.3/Source/WebKit/UIProcess/API/gtk/WebKitContextMenu.h"
                       line="48"/>
      <field name="parent" writable="1">
        <type name="GObject.Object" c:type="GObject"/>
      </field>
      <field name="priv" writable="1">
        <type name="ContextMenuPrivate" c:type="WebKitContextMenuPrivate*"/>
      </field>
    </record>
    <record name="_ContextMenuItem" c:type="_WebKitContextMenuItem">
      <source-position filename="webkitgtk-2.30.3/Source/WebKit/UIProcess/API/gtk3/WebKitContextMenuItem.h"
                       line="49"/>
      <field name="parent" writable="1">
        <type name="GObject.InitiallyUnowned" c:type="GInitiallyUnowned"/>
      </field>
      <field name="priv" writable="1">
        <type name="ContextMenuItemPrivate"
              c:type="WebKitContextMenuItemPrivate*"/>
      </field>
    </record>
  </namespace>
</repository>
salewski@nuc ~/gintrotest/tests $ grep "class name=\"ContextMenu" /usr/share/gir-1.0/WebKit2WebExtension-4.0.gir 
    <class name="ContextMenu"
    <class name="ContextMenuItem"
```

Comment of ebassi Emmanuele Bassi Foundation Staff:

```
Yes, it should be reported to the WebKitGTK issue tracker; the records should be named
ContextMenu and ContextMenuItem, respectively, even though they are just records—opaque
structures for the instance structure of their respective classes. The class is what matters.
```

See

https://discourse.gnome.org/t/webkit2webextension-4-0-gir-contains-record-name-contextmenu/5252