Allow extensions to have external dependencies (#1018)

Signed-off-by: Jari Kolehmainen <jari.kolehmainen@gmail.com>

src/common/cluster-ipc.ts

@@ -1,5 +1,6 @@
 import { createIpcChannel } from "./ipc";
 import { ClusterId, clusterStore } from "./cluster-store";
+import { extensionLoader } from "../extensions/extension-loader"
 import { tracker } from "./tracker";
 
 export const clusterIpc = {
@@ -8,7 +9,10 @@ export const clusterIpc = {
     handle: (clusterId: ClusterId, frameId?: number) => {
       const cluster = clusterStore.getById(clusterId);
       if (cluster) {
-        if (frameId) cluster.frameId = frameId; // save cluster's webFrame.routingId to be able to send push-updates
+        if (frameId) {
+          cluster.frameId = frameId; // save cluster's webFrame.routingId to be able to send push-updates
+        }
+        extensionLoader.broadcastExtensions(frameId)
         return cluster.activate();
       }
     },