Move RtcEventLog object from inside VoiceEngine to Call.

webrtc/call/rtc_event_log.h

Index: webrtc/call/rtc_event_log.h
diff --git a/webrtc/call/rtc_event_log.h b/webrtc/call/rtc_event_log.h
index 518308bf2d2c3577c707837a835cbc6234fb671f..6f2acaccd7551c42fcc60c75c3c411f57f254140 100644
--- a/webrtc/call/rtc_event_log.h
+++ b/webrtc/call/rtc_event_log.h
@@ -50,8 +50,10 @@ class RtcEventLog {
 
   // Starts logging until either the 10 minute timer runs out or the StopLogging
   // function is called. The RtcEventLog takes ownership of the supplied
-  // rtc::PlatformFile.
-  virtual bool StartLogging(rtc::PlatformFile log_file) = 0;
+  // rtc::PlatformFile. The max_size_bytes argument is ignored, it is added here
+  // for future use.
+  virtual bool StartLogging(rtc::PlatformFile log_file,
+                            int64_t max_size_bytes) = 0;
 
   virtual void StopLogging() = 0;