Issue #1829 - Revert "Issue #1751"

toolkit/mozapps/update/updater/updater-common.build

@@ -73,6 +73,24 @@ if 'gtk' in CONFIG['MOZ_WIDGET_TOOLKIT']:
         'progressui_gtk.cpp',
     ]
 
+if CONFIG['MOZ_WIDGET_TOOLKIT'] == 'cocoa':
+    have_progressui = 1
+    srcs += [
+        'launchchild_osx.mm',
+        'progressui_osx.mm',
+    ]
+    OS_LIBS += [
+        '-framework Cocoa',
+        '-framework Security',
+        '-framework SystemConfiguration',
+    ]
+    UNIFIED_SOURCES += [
+        '/toolkit/xre/updaterfileutils_osx.mm',
+    ]
+    LOCAL_INCLUDES += [
+        '/toolkit/xre',
+    ]
+
 if have_progressui == 0:
     srcs += [
         'progressui_null.cpp',