Ensure that WebRTC AEC recording checkbox is not set if cancelling file dialog.

content/browser/resources/media/webrtc_internals.js

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 var tabView = null;
 var ssrcInfoManager = null;
 var peerConnectionUpdateTable = null;
 var statsTable = null;
 var dumpCreator = null;
 /** A map from peer connection id to the PeerConnectionRecord. */
@@ skipping 258 matching lines @@
  * @param {!Object} data The object containing rid {number}, the render id.
  */
 function removeGetUserMediaForRenderer(data) {
   // TODO(jiayl): remove the getUserMedia info from the tabbed UI.
   for (var i = userMediaRequests.length - 1; i >= 0; --i) {
     if (userMediaRequests[i].rid == data.rid)
       userMediaRequests.splice(i, 1);
   }
 }
 
+
+/**
+ * Notification that the AEC recording file selection dialog was cancelled,
+ * i.e. AEC has not been enabled.
+ */
+function aecRecordingFileSelectionCancelled() {
+  dumpCreator.aecRecordingFileSelectionCancelled();
+}
+
+
 /**
  * Set
  */
 function enableAecRecording() {
   dumpCreator.enableAecRecording();
 }