Bug 895274 part.139 Rename NS_DURATIONCHANGE to eDurationChange r=smaug

dom/events/EventNameList.h

@@ -207,7 +207,7 @@ EVENT(drop,
       EventNameType_HTMLXUL,
       eDragEventClass)
 EVENT(durationchange,
-      NS_DURATIONCHANGE,
+      eDurationChange,
       EventNameType_HTML,
       eBasicEventClass)
 EVENT(emptied,

widget/EventMessageList.h

@@ -263,7 +263,7 @@ NS_EVENT_MESSAGE(eSeeked,               eMediaEventFirst + 14)
 NS_EVENT_MESSAGE(eTimeUpdate,           eMediaEventFirst + 15)
 NS_EVENT_MESSAGE(eEnded,                eMediaEventFirst + 16)
 NS_EVENT_MESSAGE(eRateChange,           eMediaEventFirst + 17)
-NS_EVENT_MESSAGE(NS_DURATIONCHANGE,     eMediaEventFirst + 18)
+NS_EVENT_MESSAGE(eDurationChange,       eMediaEventFirst + 18)
 NS_EVENT_MESSAGE(NS_VOLUMECHANGE,       eMediaEventFirst + 19)
 
 // paint notification events