Update status

sdk/lib/_internal/lib/collection_patch.dart

Index: sdk/lib/_internal/lib/collection_patch.dart
diff --git a/sdk/lib/_internal/lib/collection_patch.dart b/sdk/lib/_internal/lib/collection_patch.dart
index 0b3ef78d11490ee4c75ac2010b34d7b4d3508037..463fab9c4cb24ca2a7f4e62af549ed2dc1c6134d 100644
--- a/sdk/lib/_internal/lib/collection_patch.dart
+++ b/sdk/lib/_internal/lib/collection_patch.dart
@@ -612,7 +612,7 @@ class _LinkedHashMap<K, V> implements LinkedHashMap<K, V> {
     }
   }
 
-  V _get(K key) {
+  V _get(Object key) {
     var rest = _rest;
     if (rest == null) return null;
     var bucket = _getBucket(rest, key);
@@ -1110,7 +1110,7 @@ class _HashSet<E> extends _HashSetBase<E> implements HashSet<E> {
     }
   }
 
-  bool _remove(object) {
+  bool _remove(Object object) {
     var rest = _rest;
     if (rest == null) return false;
     var bucket = _getBucket(rest, object);