Allow audio debug recordings through a private API extension.

chrome/common/extensions/api/webrtc_logging_private.idl

Index: chrome/common/extensions/api/webrtc_logging_private.idl
diff --git a/chrome/common/extensions/api/webrtc_logging_private.idl b/chrome/common/extensions/api/webrtc_logging_private.idl
index 5c72c9597ba15e33f52a02f2644256eb8bcc9772..12c47e9efd7c3abcf7a731e8820d57d92d6daa4e 100644
--- a/chrome/common/extensions/api/webrtc_logging_private.idl
+++ b/chrome/common/extensions/api/webrtc_logging_private.idl
@@ -28,7 +28,14 @@ namespace webrtcLoggingPrivate {
     long? guestProcessId;
   };
 
+  dictionary AecDumpInfo {
+    // Absolute path prefix for the AEC dump. Empty if not successful.
+    DOMString prefixPath;
+  };
+
+
   callback GenericDoneCallback = void ();
+  callback AecDumpStartedCallback = void (AecDumpInfo info);
   callback UploadDoneCallback = void (UploadResult result);
 
   interface Functions {
@@ -111,5 +118,18 @@ namespace webrtcLoggingPrivate {
                             boolean incoming,
                             boolean outgoing,
                             GenericDoneCallback callback);
+
+    // Starts an AEC Dump for all renderer processes with open peer connections.
+    // One file per renderer process will be created, with the renderer
+    // process ID appended to a predefined file path.
+    // |seconds| indicates how many seconds of audio to record. If |seconds|
+    // is zero, recording will continue until stopAecDump() is explicitly called.

[Guido Urdaneta, 2015/12/17 14:35:42]

Done.

+    // If |seconds| is negative, startAecDump() will fail.
+    // The base filename for dumps is returned to |callback|.
+    static void startAecDump(long seconds, AecDumpStartedCallback callback);
+    //static void startAecDump(optional long seconds, [Default=Undefined] optional GenericDoneCallback callback);

[tommi (sloooow) - chröme, 2015/12/17 11:03:26]

remove?

[Guido Urdaneta, 2015/12/17 14:35:42]

Done.

+
+    // Stops all AEC Dumps for all renderer processes.
+    static void stopAecDump(GenericDoneCallback callback);
   };
 };