Fix breakage in share extension.

SignalMessaging/ViewControllers/OWSNavigationController.m

@@ -150,7 +150,9 @@ NS_ASSUME_NONNULL_BEGIN
 
 - (UIStatusBarStyle)preferredStatusBarStyle
 {
-    if (OWSWindowManager.sharedManager.hasCall) {
+    if (!CurrentAppContext().isMainApp) {
+        return super.preferredStatusBarStyle;
+    } else if (OWSWindowManager.sharedManager.hasCall) {
         // Status bar is overlaying the green "call banner"
         return UIStatusBarStyleLightContent;
     } else {
@@ -165,7 +167,9 @@ NS_ASSUME_NONNULL_BEGIN
     [UIView setAnimationsEnabled:NO];
 
     if (@available(iOS 11.0, *)) {
-        if (OWSWindowManager.sharedManager.hasCall) {
+        if (!CurrentAppContext().isMainApp) {
+            self.additionalSafeAreaInsets = UIEdgeInsetsZero;
+        } else if (OWSWindowManager.sharedManager.hasCall) {
             self.additionalSafeAreaInsets = UIEdgeInsetsMake(20, 0, 0, 0);
         } else {
             self.additionalSafeAreaInsets = UIEdgeInsetsZero;

SignalMessaging/Views/OWSNavigationBar.swift

@@ -144,9 +144,11 @@ public class OWSNavigationBar: UINavigationBar {
     }
 
     public override func layoutSubviews() {
-        guard OWSWindowManager.shared().hasCall() else {
-            super.layoutSubviews()
-            return
+        if CurrentAppContext().isMainApp {
+            guard OWSWindowManager.shared().hasCall() else {
+                super.layoutSubviews()
+                return
+            }
         }
 
         guard #available(iOS 11, *) else {

SignalServiceKit/src/Messages/OWSMessageManager.m

@@ -86,7 +86,6 @@ NS_ASSUME_NONNULL_BEGIN
     _incomingMessageFinder = [[OWSIncomingMessageFinder alloc] initWithPrimaryStorage:primaryStorage];
 
     OWSSingletonAssert();
-    OWSAssertDebug(CurrentAppContext().isMainApp);
 
     return self;
 }

SignalShareExtension/ShareViewController.swift

@@ -26,7 +26,7 @@ public class ShareViewController: UIViewController, ShareViewDelegate, SAEFailed
     private var progressPoller: ProgressPoller?
     var loadViewController: SAELoadViewController?
 
-    let shareViewNavigationController: OWSNavigationController = OWSNavigationController()
+    private var shareViewNavigationController: OWSNavigationController?
 
     override open func loadView() {
         super.loadView()
@@ -70,6 +70,9 @@ public class ShareViewController: UIViewController, ShareViewDelegate, SAEFailed
             return
         }
 
+        let shareViewNavigationController = OWSNavigationController()
+        self.shareViewNavigationController = shareViewNavigationController
+
         let loadViewController = SAELoadViewController(delegate: self)
         self.loadViewController = loadViewController
 
@@ -452,6 +455,10 @@ public class ShareViewController: UIViewController, ShareViewDelegate, SAEFailed
             // If user is registered, do nothing.
             return
         }
+        guard let shareViewNavigationController = shareViewNavigationController else {
+            owsFailDebug("Missing shareViewNavigationController")
+            return
+        }
         guard let firstViewController = shareViewNavigationController.viewControllers.first else {
             // If no view has been presented yet, do nothing.
             return
@@ -513,6 +520,10 @@ public class ShareViewController: UIViewController, ShareViewDelegate, SAEFailed
     private func showPrimaryViewController(_ viewController: UIViewController) {
         AssertIsOnMainThread()
 
+        guard let shareViewNavigationController = shareViewNavigationController else {
+            owsFailDebug("Missing shareViewNavigationController")
+            return
+        }
         shareViewNavigationController.setViewControllers([viewController], animated: false)
         if self.presentedViewController == nil {
             Logger.debug("presenting modally: \(viewController)")