Dispatch slotchange events in "notify mutation observers" steps

third_party/WebKit/Source/core/dom/MutationObserver.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 23 matching lines @@
 #include "base/gtest_prod_util.h"
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "core/CoreExport.h"
 #include "platform/heap/Handle.h"
 #include "wtf/HashSet.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
 class ExceptionState;
+class HTMLSlotElement;
 class MutationCallback;
 class MutationObserver;
 class MutationObserverInit;
 class MutationObserverRegistration;
 class MutationRecord;
 class Node;
 
 typedef unsigned char MutationObserverOptions;
 typedef unsigned char MutationRecordDeliveryOptions;
 
@@ skipping 20 matching lines @@
   enum ObservationFlags { Subtree = 1 << 3, AttributeFilter = 1 << 4 };
 
   enum DeliveryFlags {
     AttributeOldValue = 1 << 5,
     CharacterDataOldValue = 1 << 6,
   };
 
   static MutationObserver* create(MutationCallback*);
   static void resumeSuspendedObservers();
   static void deliverMutations();
+  static void enqueueSlotChange(HTMLSlotElement&);
 
   ~MutationObserver();
 
   void observe(Node*, const MutationObserverInit&, ExceptionState&);
   MutationRecordVector takeRecords();
   void disconnect();
   void observationStarted(MutationObserverRegistration*);
   void observationEnded(MutationObserverRegistration*);
   void enqueueMutationRecord(MutationRecord*);
   void setHasTransientRegistration();
@@ skipping 16 matching lines @@
   MutationRecordVector m_records;
   MutationObserverRegistrationSet m_registrations;
   unsigned m_priority;
 
   FRIEND_TEST_ALL_PREFIXES(MutationObserverTest, DisconnectCrash);
 };
 
 }  // namespace blink
 
 #endif  // MutationObserver_h