Move the call to enable the WebRTC event log from PeerConnectionFactory to PeerConnection.

content/browser/resources/media/dump_creator.js

Index: content/browser/resources/media/dump_creator.js
diff --git a/content/browser/resources/media/dump_creator.js b/content/browser/resources/media/dump_creator.js
index c8f53dfc165c69a2765153145451c6c7c4bad818..7b42d4032c592c83345a9fe5534f2aeae986647c 100644
--- a/content/browser/resources/media/dump_creator.js
+++ b/content/browser/resources/media/dump_creator.js
@@ -62,12 +62,21 @@ var DumpCreator = (function() {
         ' and RTCP packets are logged. These do not include any audio or' +
         ' video information, nor any other types of personally identifiable' +
         ' information (so no IP addresses or URLs). Checking this box will' +
-        ' enable the recording for currently ongoing WebRTC calls. When' +
-        ' the box is unchecked or this page is closed, all active recordings' +
-        ' will be stopped. Recording in multiple tabs or multiple recordings' +
-        ' in the same tab is currently not supported. When enabling, a' +
-        ' filename for the recording can be selected. If an existing file is' +
-        ' selected, it will be overwritten. </p>';
+        ' enable the recording for ongoing WebRTC calls and for future' +
+        ' WebRTC calls. When the box is unchecked or this page is closed,' +
+        ' all ongoing recordings will be stopped and this recording' +
+        ' functionality will be disabled for future WebRTC calls. Recording' +
+        ' in multiple tabs or multiple recordings in the same tab will cause' +
+        ' multiple log files to be created. When enabling, a filename for the' +
+        ' recording can be selected. The entered filename is used as a' +

[Henrik Grunell, 2016/05/13 09:05:31]

Nit: "entered" -> "selected".

[Ivo-OOO until feb 6, 2016/05/18 16:26:54]

Done.

+        ' base, to which the following suffixes will be appended.</p>' +
+        ' <p><div>&lt;base filename&gt;.&lt;render process ID&gt;' +

[Henrik Grunell, 2016/05/13 09:05:31]

Nit: No need for <div></div> since there's only one in the <p></p>.

[Ivo-OOO until feb 6, 2016/05/18 16:26:55]

Done.

+        '.&lt;recording ID&gt;</div></p>' +
+        '<p class=audio-recordings-info>Event logs from different tabs will' +

[Henrik Grunell, 2016/05/13 09:05:31]

This is not always true; different tabs can share render process in some cases.
You could just skip that part or rephrase.

[Ivo-OOO until feb 6, 2016/05/18 16:26:55]

I did not know that. I think removing this part would be better otherwise it
gets a bit confusing.

+        ' have a different render process ID, and recordings from multiple' +
+        ' peerconnections within the same tab will have a different recording' +

[Henrik Grunell, 2016/05/13 09:05:31]

Nit: PeerConnections

[Henrik Grunell, 2016/05/13 09:05:31]

"...will have different recording IDs."

[Ivo-OOO until feb 6, 2016/05/18 16:26:55]

This text is removed now.

+        ' ID. If a file with the same name already exists, it will be' +
+        ' overwritten. </p>';
     content.getElementsByTagName('a')[0].addEventListener(
         'click', this.onDownloadData_.bind(this));
     content.getElementsByTagName('input')[0].addEventListener(