The overlay defined two elements (helpMenu, menu_ToolsPopup) for all
platforms and three others (windowMenu, baseMenuCommandSet, baseMenuKeyset)
that were MacOS only. The two all platform elements and windowMenu were only
used once and inlined into browser-menubar.inc. The rest of the MacOS only
elements were conditionally inlined into browser-sets.inc.
MozReview-Commit-ID: D2uyCrnepuH
- bundle_browser_region is already unused so that's just removed.
- After the previous changeset, bundle_browser is referenced only in utilityOverlay.js,
where it's used for the context menu's "Open Link In New Container Tab" submenu.
By updating that one consumer to use Services.strings.createBundle directly we can
remove all instances of the bundle_browser node (overlay and otherwise), and chip
away at the baseMenuOverlay file.
MozReview-Commit-ID: KylUwBRNciS
