Convert beforeunload listeners

js/chromium.js

@@ -133,6 +133,14 @@
                     return appWindow.contentWindow;
                 });
             }
+        },
+
+        beforeUnload: function(callback) {
+            if (chrome.runtime) {
+                chrome.runtime.onSuspend.addListener(callback);
+            } else {
+                window.addEventListener('beforeunload', callback);
+            }
         }
 
     };

js/panel_controller.js

@@ -92,7 +92,7 @@
                 windowMap.add({ windowId: windowInfo.id, modelId: modelId });
 
                 // close the panel if background.html is refreshed
-                window.addEventListener('beforeunload', function () {
+                extension.windows.beforeUnload(function() {
                     // TODO: reattach after reload instead of closing.
                     extension.windows.remove(windowInfo.id);
                 });
@@ -125,7 +125,7 @@
                 inboxWindowId = windowInfo.id;
 
                 // close the panel if background.html is refreshed
-                window.addEventListener('beforeunload', function () {
+                extension.windows.beforeUnload(function() {
                     // TODO: reattach after reload instead of closing.
                     extension.windows.remove(windowInfo.id);
                 });

js/views/conversation_list_item_view.js

@@ -28,7 +28,7 @@
         initialize: function() {
             this.listenTo(this.model, 'change', this.render); // auto update
             this.listenTo(this.model, 'destroy', this.remove); // auto update
-            window.addEventListener('beforeunload', function () {
+            extension.windows.beforeUnload(function() {
                 this.stopListening();
             }.bind(this));
         },

js/views/inbox_view.js

@@ -73,7 +73,7 @@
 
                 new SocketView().render().$el.appendTo(this.$('.socket-status'));
 
-                window.addEventListener('beforeunload', function () {
+                extension.windows.beforeUnload(function() {
                     this.inbox.stopListening();
                 }.bind(this));
             },