adding back NSE methods to OneSignal header

Author: emawby

iOS_SDK/OneSignalSDK/Source/OneSignal.h

@@ -592,6 +592,14 @@ typedef void (^OSUpdateExternalUserIdSuccessBlock)(NSDictionary *results);
 + (void)sendUniqueOutcome:(NSString * _Nonnull)name onSuccess:(OSSendOutcomeSuccess _Nullable)success;
 + (void)sendOutcomeWithValue:(NSString * _Nonnull)name value:(NSNumber * _Nonnull)value;
 + (void)sendOutcomeWithValue:(NSString * _Nonnull)name value:(NSNumber * _Nonnull)value onSuccess:(OSSendOutcomeSuccess _Nullable)success;
+
+#pragma mark Extension
+// iOS 10 only
+// Process from Notification Service Extension.
+// Used for iOS Media Attachemtns and Action Buttons.
++ (UNMutableNotificationContent*)didReceiveNotificationExtensionRequest:(UNNotificationRequest* _Nonnull)request withMutableNotificationContent:(UNMutableNotificationContent* _Nullable)replacementContent __deprecated_msg("Please use didReceiveNotificationExtensionRequest:withMutableNotificationContent:withContentHandler: instead.");
++ (UNMutableNotificationContent*)didReceiveNotificationExtensionRequest:(UNNotificationRequest* _Nonnull)request withMutableNotificationContent:(UNMutableNotificationContent* _Nullable)replacementContent withContentHandler:(void (^)(UNNotificationContent *_Nonnull))contentHandler;
++ (UNMutableNotificationContent*)serviceExtensionTimeWillExpireRequest:(UNNotificationRequest* _Nonnull)request withMutableNotificationContent:(UNMutableNotificationContent* _Nullable)replacementContent;
 @end
 
 #pragma clang diagnostic pop