Leave primary to upload profile key commitment.

SignalMessaging/profiles/OWSProfileManager.m

@@ -430,6 +430,17 @@ const NSString *kNSNotificationKey_WasLocallyInitiated = @"kNSNotificationKey_Wa
     [ProfileFetcherJob fetchAndUpdateProfileWithAddress:address ignoreThrottling:YES];
 }
 
+- (AnyPromise *)fetchLocalUsersProfilePromise
+{
+    SignalServiceAddress *_Nullable localAddress = self.tsAccountManager.localAddress;
+    if (!localAddress.isValid) {
+        return [AnyPromise promiseWithValue:OWSErrorMakeAssertionError(@"Missing local address.")];
+    }
+    return [ProfileFetcherJob fetchAndUpdateProfilePromiseObjcWithAddress:localAddress
+                                                              mainAppOnly:NO
+                                                         ignoreThrottling:YES];
+}
+
 - (void)fetchAndUpdateProfileForUsername:(NSString *)username
                                  success:(void (^)(SignalServiceAddress *))success
                                 notFound:(void (^)(void))notFound

SignalMessaging/profiles/ProfileFetcherJob.swift

@@ -106,6 +106,15 @@ public class ProfileFetcherJob: NSObject {
 
     private var backgroundTask: OWSBackgroundTask?
 
+    @objc
+    public class func fetchAndUpdateProfilePromiseObjc(address: SignalServiceAddress,
+                                                       mainAppOnly: Bool,
+                                                       ignoreThrottling: Bool) -> AnyPromise {
+        return AnyPromise(fetchAndUpdateProfilePromise(address: address,
+                                                       mainAppOnly: mainAppOnly,
+                                                       ignoreThrottling: ignoreThrottling))
+    }
+
     public class func fetchAndUpdateProfilePromise(address: SignalServiceAddress,
                                                    mainAppOnly: Bool = true,
                                                    ignoreThrottling: Bool = false,

SignalServiceKit/src/Protocols/ProfileManagerProtocol.h

@@ -2,6 +2,7 @@
 //  Copyright (c) 2020 Open Whisper Systems. All rights reserved.
 //
 
+@class AnyPromise;
 @class OWSAES256Key;
 @class SDSAnyReadTransaction;
 @class SDSAnyWriteTransaction;
@@ -72,6 +73,8 @@ NS_ASSUME_NONNULL_BEGIN
 
 - (void)fetchAndUpdateLocalUsersProfile;
 
+- (AnyPromise *)fetchLocalUsersProfilePromise;
+
 - (void)updateProfileForAddress:(SignalServiceAddress *)address;
 
 - (BOOL)recipientAddressIsUuidCapable:(SignalServiceAddress *)address transaction:(SDSAnyReadTransaction *)transaction;

SignalServiceKit/src/TestUtils/OWSFakeProfileManager.m

@@ -190,6 +190,12 @@ NS_ASSUME_NONNULL_BEGIN
     // Do nothing.
 }
 
+- (AnyPromise *)fetchLocalUsersProfilePromise
+{
+    // Do nothing.
+    return [AnyPromise promiseWithValue:nil];
+}
+
 - (void)updateProfileForAddress:(nonnull SignalServiceAddress *)address
 {
     // Do nothing.

SignalServiceKit/src/groups/GroupManager.swift

@@ -1491,6 +1491,12 @@ public class GroupManager: NSObject {
             guard !hasLocalCredential else {
                 return Promise.value(())
             }
+            guard tsAccountManager.isRegisteredPrimaryDevice else {
+                // On secondary devices, just re-fetch the local
+                // profile.
+                return self.profileManager.fetchLocalUsersProfilePromise().asVoid()
+            }
+
             // We (and other clients) need a profile key credential for
             // all group members to use groups v2.  Other clients can't
             // request our profile key credential from the service until