Now that these functions are solely living with the Tabs Tray business logic, we no longer need to have a parameter for the `source` when it's only ever "Tabs tray"
Bug 1824029 Comment 0 Edit History
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Now that these functions are solely living with the Tabs Tray business logic, see if we no longer need to have a parameter for the `source` when it's only ever called with `TABS_TRAY_FEATURE_NAME` ("Tabs tray") or `TrayPagerAdapter.INACTIVE_TABS_FEATURE_NAME` ("Inactive tabs").