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

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 f69e36705adbe03a62d3c2477196c80d49c3b3a0..52ab9f711f4297595b16777e9c8ab8766ca3b33c 100644
--- a/content/browser/resources/media/webrtc_internals.js
+++ b/content/browser/resources/media/webrtc_internals.js
@@ -276,6 +276,16 @@ function removeGetUserMediaForRenderer(data) {
   }
 }
 
+
+/**
+ * Notification that the AEC recording file selection dialog was cancelled,
+ * i.e. AEC has not been enabled.
+ */
+function aecRecordingFileSelectionCancelled() {
+  dumpCreator.disableAecRecording();
+}
+
+
 /**
  * Set
  */