Start and stop RTC event logs from private extension 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.
 namespace webrtcLoggingPrivate {
   dictionary MetaDataEntry {
     // The meta data entry key.
     DOMString key;
@@ skipping 10 matching lines @@
   dictionary RequestInfo {
     // The tab identifier from the chrome.tabs API, if the request is from a
     // tab.
     long? tabId;
 
     // The guest process id for the requester, if the request is from a
     // webview.
     long? guestProcessId;
   };
 
-  // This contains information about the result of audio debug recordings.
-  dictionary AudioDebugRecordingsInfo {
+  // This contains information about the result of audio debug recordings or
+  // WebRTC event logs.
+  dictionary RecordingInfo {
     // Absolute path prefix for the files with the audio debug recordings.
     DOMString prefixPath;
 
-    // Indicates if recording was stopped.
+    // Indicates if recording was stopped (either by a timed callback after the
+    // time limit has elapsed, or by a manual call).
     boolean didStop;
 
     // Indicates if recording was stopped manually through a
-    // stopAudioDebugRecordings() call.
+    // stopAudioDebugRecordings() or stopWebRtcEventLogging() call.
     boolean didManualStop;
   };
 
-
   callback GenericDoneCallback = void ();
-  callback AudioDebugRecordingsCallback =
-      void (AudioDebugRecordingsInfo info);
+  callback RecordingDoneCallback = void (RecordingInfo info);
   callback UploadDoneCallback = void (UploadResult result);
 
   interface Functions {
     // For all functions, |request| determines which render process to apply
     // the operation on. |request| identifies the requesting process.
     // |securityOrigin| is the security origin for the tab identified by |tabId|
     // and is used for verifying that the tab is the correct one and has not
     // been navigated away from.
 
     // Sets additional custom meta data that will be uploaded along with the
@@ skipping 74 matching lines @@
     // |seconds| indicates how many seconds of audio to record. |callback|
     // is invoked once recording stops.
     // If |seconds| is zero, recording will continue until
     // stopAudioDebugRecordings() is explicitly called. In this case,
     // |callback| is invoked once recording starts and will report
     // that recording has not stopped.
     // If |seconds| is negative, startAudioDebugRecordings() fails.
     static void startAudioDebugRecordings(RequestInfo request,
                              DOMString securityOrigin,
                              long seconds,
-                             AudioDebugRecordingsCallback callback);
+                             RecordingDoneCallback callback);
 
     // Stops audio debug recordings.  |callback| is invoked once recording
     // stops. If there is no recording in progress, stopAudioDebugRecordings()
     // fails.
     static void stopAudioDebugRecordings(RequestInfo request,
                             DOMString securityOrigin,
-                            AudioDebugRecordingsCallback callback);
+                            RecordingDoneCallback callback);
+
+    // Starts WebRTC event logging.
+    // startWebRtcEventLogging() logs the most recent events that happened
+    // before the call, and then keep logging for |seconds| seconds into the
+    // future. |callback| is invoked once the logging stops.
+    // If |seconds| is zero, the logging will continue until
+    // stopWebRtcEventLogging() is explicitly called. In this case,
+    // |callback| is invoked once recording starts and will report
+    // that recording has not stopped.
+    // If |seconds| is negative, startWebRtcEventLogging() fails.
+    static void startWebRtcEventLogging(RequestInfo request,
+                             DOMString securityOrigin,

[tommi (sloooow) - chröme, 2016/04/07 12:44:29]

indent looks off here and below

[terelius-chromium, 2016/04/13 08:52:05]

You're right. Done.

+                             long seconds,
+                             RecordingDoneCallback callback);
+
+    // Stops RTC event logging. |callback| is invoked once the logging stops.
+    // If there is no recording in progress, stopWebRtcEventLogging() fails.
+    static void stopWebRtcEventLogging(RequestInfo request,
+                            DOMString securityOrigin,
+                            RecordingDoneCallback callback);
   };
 };