--- a/browser/modules/PluginContent.jsm
+++ b/browser/modules/PluginContent.jsm
@@ -951,32 +951,34 @@ PluginContent.prototype = {
     let runID = plugin.runID;
 
     if (isShowing) {
       // If a previous plugin on the page was too small and resulted in adding a
       // notification bar, then remove it because this plugin instance it big
       // enough to serve as in-content notification.
       this.hideNotificationBar("plugin-crashed");
       doc.mozNoPluginCrashedNotification = true;
+
+      // Notify others that the crash reporter UI is now ready
+      let winUtils = this.content.QueryInterface(Ci.nsIInterfaceRequestor)
+                             .getInterface(Ci.nsIDOMWindowUtils);
+      let event = new this.content.CustomEvent("PluginCrashReporterDisplayed", {bubbles: true});
+      winUtils.dispatchEventToChromeOnly(plugin, event);
     } else {
       // If another plugin on the page was large enough to show our UI, we don't
       // want to show a notification bar.
       if (!doc.mozNoPluginCrashedNotification) {
         this.global.sendAsyncMessage("PluginContent:ShowPluginCrashedNotification",
                                      { messageString: message, pluginID: runID });
         // Remove the notification when the page is reloaded.
         doc.defaultView.top.addEventListener("unload", event => {
           this.hideNotificationBar("plugin-crashed");
         }, false);
       }
     }
-
-    // Notify others that the crash reporter UI is now ready
-    this.global.content.dispatchEvent(
-      new this.global.content.CustomEvent("PluginCrashReporterDisplayed", {bubbles: true}));
   },
 
   NPAPIPluginCrashReportSubmitted: function({ runID, state }) {
     this.pluginCrashData.delete(runID);
     let contentWindow = this.global.content;
     let cwu = contentWindow.QueryInterface(Ci.nsIInterfaceRequestor)
                            .getInterface(Ci.nsIDOMWindowUtils);
     let plugins = cwu.plugins;