Respond to CR. Rework how CallNotificationsAdapter adaptee is populated.

Signal/src/UserInterface/Notifications/CallNotificationsAdapter.swift

@@ -10,20 +10,18 @@ import Foundation
 @objc(OWSCallNotificationsAdapter)
 public class CallNotificationsAdapter: NSObject {
 
-    let adaptee: OWSCallNotificationsAdaptee
-
-    @objc public init(adaptee: OWSCallNotificationsAdaptee) {
-        // TODO We can't mix UILocalNotification (NotificationManager) with the UNNotifications
+    var adaptee: OWSCallNotificationsAdaptee {
+        // TODO: We may eventually want to use UserNotificationsAdaptee instead.
+        //
+        // We can't mix UILocalNotification (NotificationManager) with the UNNotifications
         // Because registering message categories in one, clobbers the registered categories from the other
         // We have to first port *all* the existing UINotification categories to UNNotifications
-        // which is a good thing to do, but in trying to limit the scope of changes that's been 
+        // which is a good thing to do, but in trying to limit the scope of changes that's been
         // left out for now.
-//        if #available(iOS 10.0, *) {
-//            adaptee = UserNotificationsAdaptee()
-//        } else {
-            self.adaptee = adaptee
-//        }
+        return SignalApp.shared().notificationsManager
+    }
 
+    @objc public override init() {
         super.init()
 
         SwiftSingletons.register(self)

Signal/src/environment/SignalApp.m

@@ -73,11 +73,10 @@ NS_ASSUME_NONNULL_BEGIN
                                              selector:@selector(didChangeCallLoggingPreference:)
                                                  name:OWSPreferencesCallLoggingDidChangeNotification
                                                object:nil];
-    _callService = [[CallService alloc]
-        initWithAccountManager:self.accountManager
-               contactsManager:Environment.shared.contactsManager
-                 messageSender:SSKEnvironment.shared.messageSender
-          notificationsAdapter:[[OWSCallNotificationsAdapter alloc] initWithAdaptee:self.notificationsManager]];
+    _callService = [[CallService alloc] initWithAccountManager:self.accountManager
+                                               contactsManager:Environment.shared.contactsManager
+                                                 messageSender:SSKEnvironment.shared.messageSender
+                                          notificationsAdapter:[OWSCallNotificationsAdapter new]];
 
     _callMessageHandler =
         [[OWSWebRTCCallMessageHandler alloc] initWithAccountManager:self.accountManager