Issue 5083 - Merges chrome subdirectory to top level directory

ext/content.js

+"use strict";
+
+chrome.runtime.onMessage.addListener((message, sender, sendResponse) =>
+{
+  return ext.onMessage._dispatch(message, {}, sendResponse).indexOf(true) != -1;
+});
+
+(function()
+{
+  let port = null;
+
+  ext.onExtensionUnloaded = {
+    addListener(listener)
+    {
+      if (!port)
+        port = chrome.runtime.connect();
+
+      // When the extension is reloaded, disabled or uninstalled the
+      // background page dies and automatically disconnects all ports
+      port.onDisconnect.addListener(listener);
+    },
+    removeListener(listener)
+    {
+      if (port)
+      {
+        port.onDisconnect.removeListener(listener);
+
+        if (!port.onDisconnect.hasListeners())
+        {
+          port.disconnect();
+          port = null;
+        }
+      }
+    }
+  };
+}());