Why:
- We want to allow extensions to register interactive menu items in the
overflow menu.
What:
- Create a PHP hook to allow extensions to provide menu items
for rendering in the overflow menu
- The hook allows for registering resource loader modules required by
the menu item
- The hook passes in some contextual information, like the thread
item data, context source object, and if the page is editable
- Create a JS hook that fires when a user selects one of the menu items
- Example implementation: Ie9afbedb4f24cbd75eb48bb21dc9f6d8d732d853
Misc:
- Remove b/c code that existed to handle a transitional period where
JSON encoded overflow menu data did not necessarily exist in the
parser cache
- Rename code instances of ellipsis button / data / menu to refer to
"overflow menu"
- Some renames will have to wait until parser cache is updated; these
are noted with TODOs
Bug: T342251
Change-Id: I5f2a51791f8ba7619d1399a4b93111e9bb44e172
