import changes from `dev' branch of rmottola/Arctic-Fox:

- Bug 895274 part.79 Rename NS_DRAGDROP_END to eDragEnd r=smaug (d8af0a9474)
- Bug 895274 part.80 Rename NS_DRAGDROP_DRAG to eDrag r=smaug (c52b1e9051)
- Bug 895274 part.81 Rename NS_DRAGDROP_OVER to eDragOver r=smaug (1575b62285)
- Bug 1199336 - Fix jank/hangs dragging files into the browser due to O(n^2) behavior in the Cocoa widget drag-and-drop code. r=mstange (d08bf7eb39)
- Bug 895274 part.82 Rename NS_DRAGDROP_ENTER to eDragEnter r=smaug (a4cc62f29b)
- Bug 895274 part.83 Rename NS_DRAGDROP_EXIT to eDragExit r=smaug (a9bc6efbc6)
- Bug 895274 part.84 Rename NS_DRAGDROP_DRAGDROP to eLegacyDragDrop r=smaug (1e0e2fc36c)
- Bug 895274 part.85 Rename NS_DRAGDROP_GESTURE to eLegacyDragGesture r=smaug (02b65c9714)
- Bug 895274 part.86 Rename NS_XUL_EVENT_START to eXULEventFirst r=smaug (fdbf788d30)
- Bug 895274 part.87 Rename NS_XUL_POPUP_SHOWING to eXULPopupShowing r=smaug (be6db4598b)
- Bug 895274 part.88 Rename NS_XUL_POPUP_SHOWN to eXULPopupShown r=smaug (aa31f0604c)
- Bug 895274 part.89 Rename NS_XUL_POPUP_HIDING to eXULPopupHiding r=smaug (31aa9bba3f)
- Bug 895274 part.90 Rename NS_XUL_POPUP_HIDDEN to eXULPopupHidden r=smaug (3a16c46a47)
- Bug 895274 part.91 Rename NS_XUL_BROADCAST to eXULBroadcast r=smaug (1f6a9ba826)
- Bug 895274 part.92 Rename NS_XUL_COMMAND_UPDATE to eXULCommandUpdate r=smaug (a905f91d85)
- Bug 895274 part.93 Rename NS_XULCOMMAND_EVENT_START to eXULCommandEventFirst r=smaug (676ccd9544)
- Bug 895274 part.94 Rename NS_XUL_COMMAND to eXULCommand r=smaug (d91d925b72)
- Bug 895274 part.104 Rename NS_PAGETRANSITION_START to ePageTransitionEventFirst r=smaug (0e481eb39c)
- Bug 895274 part.105 Rename NS_PAGE_SHOW to ePageShow r=smaug (f45dc12913)
- Bug 895274 part.106 Rename NS_PAGE_HIDE to ePageHide r=smaug (b3985be873)
- Bug 895274 part.107 Get rid of NS_SVG_ABORT and NS_SVG_ERROR due to unused r=smaug (d129144cd4)
- Bug 895274 part.108 Rename NS_SVG_EVENT_START to eSVGEventFirst r=smaug (3cbb4f9e36)
- Bug 895274 part.109 Rename NS_SVG_LOAD to eSVGLoad r=smaug (bf00acdd16)
- Bug 895274 part.110 Rename NS_SVG_UNLOAD to eSVGUnload r=smaug (e14939e8d5)
- Bug 895274 part.111 Rename NS_SVG_RESIZE to eSVGResize r=smaug (b81017a3dc)
- Bug 895274 part.112 Rename NS_SVG_SCROLL to eSVGScroll r=smaug (9b0ce02714)
- Bug 895274 part.113 Rename NS_SVGZOOM_EVENT_START to eSVGZoomEventFirst r=smaug (ee1f48e8b4)
- Bug 895274 part.114 Rename NS_SVG_ZOOM to eSVGZoom r=smaug (8274e50f8c)

widget/nsBaseDragService.cpp

@@ -360,7 +360,7 @@ nsBaseDragService::EndDragSession(bool aDoneDrag)
   mEndingSession = true;
 
   if (aDoneDrag && !mSuppressLevel)
-    FireDragEventAtSource(NS_DRAGDROP_END);
+    FireDragEventAtSource(eDragEnd);
 
   if (mDragPopup) {
     nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
@@ -409,7 +409,7 @@ nsBaseDragService::FireDragEventAtSource(uint32_t aMsg)
         nsEventStatus status = nsEventStatus_eIgnore;
         WidgetDragEvent event(true, static_cast<EventMessage>(aMsg), nullptr);
         event.inputSource = mInputSource;
-        if (aMsg == NS_DRAGDROP_END) {
+        if (aMsg == eDragEnd) {
           event.refPoint.x = mEndDragPoint.x;
           event.refPoint.y = mEndDragPoint.y;
           event.userCancelled = mUserCancelled;