Replace `DocumentListenOptions` with a simple boolean. (#1099)

* Replace `DocumentListenOptions` with a simple boolean.

Instead of calling

  `addSnapshotListener(options: DocumentListenOptions.includeMetadataChanges(true))`

call

  `addSnapshotListener(includeMetadataChanges:true)`

* Style

1 files changed, 6 insertions, 28 deletions

diff --git a/Firestore/Source/Public/FIRDocumentReference.h b/Firestore/Source/Public/FIRDocumentReference.h
index 7fcc7a8..dd2d106 100644
--- a/Firestore/Source/Public/FIRDocumentReference.h
+++ b/Firestore/Source/Public/FIRDocumentReference.h
@@ -25,29 +25,6 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
-/**
- * Options for use with `[FIRDocumentReference addSnapshotListener]` to control the behavior of the
- * snapshot listener.
- */
-NS_SWIFT_NAME(DocumentListenOptions)
-@interface FIRDocumentListenOptions : NSObject
-
-+ (instancetype)options NS_SWIFT_UNAVAILABLE("Use initializer");
-
-- (instancetype)init;
-
-/**
- * Sets the includeMetadataChanges option which controls whether metadata-only changes (i.e. only
- * `FIRDocumentSnapshot.metadata` changed) should trigger snapshot events. Default is NO.
- *
- * @param includeMetadataChanges Whether to raise events for metadata-only changes.
- * @return The receiver is returned for optional method chaining.
- */
-- (instancetype)includeMetadataChanges:(BOOL)includeMetadataChanges
-    NS_SWIFT_NAME(includeMetadataChanges(_:));
-
-@end
-
 typedef void (^FIRDocumentSnapshotBlock)(FIRDocumentSnapshot *_Nullable snapshot,
                                          NSError *_Nullable error);
 
@@ -208,16 +185,17 @@ NS_SWIFT_NAME(DocumentReference)
 /**
  * Attaches a listener for DocumentSnapshot events.
  *
- * @param options Options controlling the listener behavior.
+ * @param includeMetadataChanges Whether metadata-only changes (i.e. only
+ *     `FIRDocumentSnapshot.metadata` changed) should trigger snapshot events.
  * @param listener The listener to attach.
  *
  * @return A FIRListenerRegistration that can be used to remove this listener.
  */
 // clang-format off
-- (id<FIRListenerRegistration>)addSnapshotListenerWithOptions:
-                                   (nullable FIRDocumentListenOptions *)options
-                                                     listener:(FIRDocumentSnapshotBlock)listener
-    NS_SWIFT_NAME(addSnapshotListener(options:listener:));
+- (id<FIRListenerRegistration>)
+addSnapshotListenerWithIncludeMetadataChanges:(BOOL)includeMetadataChanges
+                                     listener:(FIRDocumentSnapshotBlock)listener
+    NS_SWIFT_NAME(addSnapshotListener(includeMetadataChanges:listener:));
 // clang-format on
 
 @end