Fix browser plugin API changes

atom/browser/lib/guest-view-manager.coffee

@@ -18,6 +18,8 @@ supportedWebViewEvents = [
 
 nextInstanceId = 0
 guestInstances = {}
+embedderElementsMap = {}
+reverseEmbedderElementsMap = {}
 
 # Generate guestInstanceId.
 getNextInstanceId = (webContents) ->
@@ -41,7 +43,10 @@ createGuest = (embedder, params) ->
     destroyGuest id if guestInstances[id]?
 
   # Init guest web view after attached.
-  guest.once 'did-attach', (event, params) ->
+  guest.once 'did-attach', ->
+    params = @attachParams
+    delete @attachParams
+
     @viewInstanceId = params.instanceId
     min = width: params.minwidth, height: params.minheight
     max = width: params.maxwidth, height: params.maxheight
@@ -66,15 +71,42 @@ createGuest = (embedder, params) ->
 
   id
 
+# Attach the guest to an element of embedder.
+attachGuest = (embedder, elementInstanceId, guestInstanceId, params) ->
+  guest = guestInstances[guestInstanceId].guest
+
+  # Destroy the old guest when attaching.
+  key = "#{embedder.getId()}-#{elementInstanceId}"
+  oldGuestInstanceId = embedderElementsMap[key]
+  if oldGuestInstanceId?
+    # Reattachment to the same guest is not currently supported.
+    return unless oldGuestInstanceId != guestInstanceId
+
+    return unless guestInstances[oldGuestInstanceId]?
+    destroyGuest oldGuestInstanceId
+
+  guest.attachParams = params
+  embedderElementsMap[key] = guestInstanceId
+  reverseEmbedderElementsMap[guestInstanceId] = key
+
 # Destroy an existing guest instance.
 destroyGuest = (id) ->
   webViewManager.removeGuest id
   guestInstances[id].guest.destroy()
   delete guestInstances[id]
 
+  key = reverseEmbedderElementsMap[id]
+  if key?
+    delete reverseEmbedderElementsMap[id]
+    delete embedderElementsMap[key]
+
 ipc.on 'ATOM_SHELL_GUEST_VIEW_MANAGER_CREATE_GUEST', (event, type, params, requestId) ->
   event.sender.send "ATOM_SHELL_RESPONSE_#{requestId}", createGuest(event.sender, params)
 
+ipc.on 'ATOM_SHELL_GUEST_VIEW_MANAGER_ATTACH_GUEST', (event, elementInstanceId, guestInstanceId, params, requestId) ->
+  attachGuest event.sender, elementInstanceId, guestInstanceId, params
+  event.sender.send "ATOM_SHELL_RESPONSE_#{requestId}"
+
 ipc.on 'ATOM_SHELL_GUEST_VIEW_MANAGER_DESTROY_GUEST', (event, id) ->
   destroyGuest id