1 files changed, 15 insertions, 15 deletions
diff --git a/Source/WebCore/dom/MutationObserverInterestGroup.h b/Source/WebCore/dom/MutationObserverInterestGroup.h
index 84cef9920..00d3849e3 100644
--- a/Source/WebCore/dom/MutationObserverInterestGroup.h
+++ b/Source/WebCore/dom/MutationObserverInterestGroup.h
@@ -28,20 +28,23 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef MutationObserverInterestGroup_h
-#define MutationObserverInterestGroup_h
+#pragma once
 
 #include "Document.h"
 #include "MutationObserver.h"
-#include "QualifiedName.h"
+#include <memory>
 #include <wtf/HashMap.h>
-#include <wtf/PassOwnPtr.h>
 
 namespace WebCore {
 
+class QualifiedName;
+
 class MutationObserverInterestGroup {
+    WTF_MAKE_FAST_ALLOCATED;
 public:
-    static PassOwnPtr<MutationObserverInterestGroup> createForChildListMutation(Node& target)
+    MutationObserverInterestGroup(HashMap<MutationObserver*, MutationRecordDeliveryOptions>&&, MutationRecordDeliveryOptions);
+
+    static std::unique_ptr<MutationObserverInterestGroup> createForChildListMutation(Node& target)
     {
         if (!target.document().hasMutationObserversOfType(MutationObserver::ChildList))
             return nullptr;
@@ -50,7 +53,7 @@ public:
         return createIfNeeded(target, MutationObserver::ChildList, oldValueFlag);
     }
 
-    static PassOwnPtr<MutationObserverInterestGroup> createForCharacterDataMutation(Node& target)
+    static std::unique_ptr<MutationObserverInterestGroup> createForCharacterDataMutation(Node& target)
     {
         if (!target.document().hasMutationObserversOfType(MutationObserver::CharacterData))
             return nullptr;
@@ -58,7 +61,7 @@ public:
         return createIfNeeded(target, MutationObserver::CharacterData, MutationObserver::CharacterDataOldValue);
     }
 
-    static PassOwnPtr<MutationObserverInterestGroup> createForAttributesMutation(Node& target, const QualifiedName& attributeName)
+    static std::unique_ptr<MutationObserverInterestGroup> createForAttributesMutation(Node& target, const QualifiedName& attributeName)
     {
         if (!target.document().hasMutationObserversOfType(MutationObserver::Attributes))
             return nullptr;
@@ -66,19 +69,16 @@ public:
         return createIfNeeded(target, MutationObserver::Attributes, MutationObserver::AttributeOldValue, &attributeName);
     }
 
-    bool isOldValueRequested();
-    void enqueueMutationRecord(PassRefPtr<MutationRecord>);
+    bool isOldValueRequested() const;
+    void enqueueMutationRecord(Ref<MutationRecord>&&);
 
 private:
-    static PassOwnPtr<MutationObserverInterestGroup> createIfNeeded(Node& target, MutationObserver::MutationType, MutationRecordDeliveryOptions oldValueFlag, const QualifiedName* attributeName = 0);
-    MutationObserverInterestGroup(HashMap<MutationObserver*, MutationRecordDeliveryOptions>& observers, MutationRecordDeliveryOptions oldValueFlag);
+    static std::unique_ptr<MutationObserverInterestGroup> createIfNeeded(Node& target, MutationObserver::MutationType, MutationRecordDeliveryOptions oldValueFlag, const QualifiedName* attributeName = nullptr);
 
-    bool hasOldValue(MutationRecordDeliveryOptions options) { return options & m_oldValueFlag; }
+    bool hasOldValue(MutationRecordDeliveryOptions options) const { return options & m_oldValueFlag; }
 
     HashMap<MutationObserver*, MutationRecordDeliveryOptions> m_observers;
     MutationRecordDeliveryOptions m_oldValueFlag;
 };
 
-}
-
-#endif // MutationObserverInterestGroup_h
+} // namespace WebCore