Adds StartRtpDump and StopRtpDump methods to webrtcLoggingPrivate API.

chrome/common/extensions/api/webrtc_logging_private.idl

 // Copyright 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.
 
 // Use the <code>chrome.webrtcLoggingPrivate</code> API to control diagnostic
 // WebRTC logging.
 [nodoc] namespace webrtcLoggingPrivate {
   dictionary MetaDataEntry {
     // The meta data entry key.
     DOMString key;
@@ skipping 39 matching lines @@
                                        DOMString securityOrigin,
                                        boolean shouldUpload);
 
     // Stops logging. After stop has finished, either upload() or discard()
     // should be called, otherwise the log will be kept in memory until the
     // render process is closed or logging restarted.
     static void stop(long tabId,
                      DOMString securityOrigin,
                      GenericDoneCallback callback);
 
-    // Uploads the log. Logging must be stopped before this function is called.
+    // Uploads the log and the RTP dumps. Logging must be stopped before this

[vrk (LEFT CHROMIUM), 2014/05/02 18:13:48]

Nit: maybe clarify, "the RTP dumps, if they exist."

[jiayl, 2014/05/02 21:22:43]

Done.

+    // function is called.
     static void upload(long tabId,
                        DOMString securityOrigin,
                        UploadDoneCallback callback);
 
     // Discards the log. Logging must be stopped before this function is called.
     static void discard(long tabId,
                         DOMString securityOrigin,
                         GenericDoneCallback callback);
+
+    // Starts RTP dumping. If it has already been started for this render
+    // process, the call will be ignored.
+    static void startRtpDump(long tabId,
+                             DOMString securityOrigin,
+                             boolean incoming,
+                             boolean outgoing,
+                             GenericDoneCallback callback);
+
+    // Stops RTP dumping. After stop has finished, the dumps will be
+    // uploaded with the log if upload is called. Otherwise, the dumps will be
+    // discarded.
+    static void stopRtpDump(long tabId,
+                            DOMString securityOrigin,
+                            boolean incoming,
+                            boolean outgoing,
+                            GenericDoneCallback callback);
   };
 };