relanding part of 407442.
git-svn-id: svn://10.0.0.236/trunk@241831 18797224-902f-48f8-a5cc-f745e15eee43
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@@ -320,7 +320,7 @@ nsINode::AddMutationObserver(nsIMutationObserver* aMutationObserver)
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{
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nsSlots* slots = GetSlots();
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if (slots) {
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slots->mMutationObservers.AppendObserverUnlessExists(aMutationObserver);
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slots->mMutationObservers.AppendElementUnlessExists(aMutationObserver);
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}
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}
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@@ -329,7 +329,7 @@ nsINode::RemoveMutationObserver(nsIMutationObserver* aMutationObserver)
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{
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nsSlots* slots = GetExistingSlots();
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if (slots) {
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slots->mMutationObservers.RemoveObserver(aMutationObserver);
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slots->mMutationObservers.RemoveElement(aMutationObserver);
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}
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}
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