webrtc-internals: dont remove tab

content/browser/resources/media/webrtc_internals.js

Index: content/browser/resources/media/webrtc_internals.js
diff --git a/content/browser/resources/media/webrtc_internals.js b/content/browser/resources/media/webrtc_internals.js
index 8ada8ade8d36b0ae622ebae3d4ed457ee1d047e1..86e4150820f91c4f112dc17199805f51700cc19c 100644
--- a/content/browser/resources/media/webrtc_internals.js
+++ b/content/browser/resources/media/webrtc_internals.js
@@ -181,7 +181,8 @@ function removePeerConnection(data) {
   var element = $(getPeerConnectionId(data));
   if (element) {
     delete peerConnectionDataStore[element.id];
-    tabView.removeTab(element.id);
+    // add a [x] button to close this tab instead of removing it immediately.
+    tabView.makeTabRemovable(element.id);
   }
 }