Refactoring: move ownership of RtcEventLog from Call to PeerConnection

webrtc/call/rtc_event_log.cc

Index: webrtc/call/rtc_event_log.cc
diff --git a/webrtc/call/rtc_event_log.cc b/webrtc/call/rtc_event_log.cc
index c022296730409ca236b25403da9e602698a95cdc..db81572f3d3b6d3758e613e9d4e902cbd5bd2977 100644
--- a/webrtc/call/rtc_event_log.cc
+++ b/webrtc/call/rtc_event_log.cc
@@ -121,6 +121,7 @@ rtclog::MediaType ConvertMediaType(MediaType media_type) {
 // sent packets because they also contain received packets.
 static const int kEventsPerSecond = 1000;
 static const int kControlMessagesPerSecond = 10;
+
 }  // namespace
 
 // RtcEventLogImpl member functions.
@@ -420,26 +421,13 @@ bool RtcEventLog::ParseRtcEventLog(const std::string& file_name,
 
 #endif  // ENABLE_RTC_EVENT_LOG
 
-bool RtcEventLogNullImpl::StartLogging(rtc::PlatformFile platform_file,
-                                       int64_t max_size_bytes) {
-  // The platform_file is open and needs to be closed.
-  if (!rtc::ClosePlatformFile(platform_file)) {
-    LOG(LS_ERROR) << "Can't close file.";
-  }
-  return false;
-}
-
 // RtcEventLog member functions.
 std::unique_ptr<RtcEventLog> RtcEventLog::Create(const Clock* clock) {
 #ifdef ENABLE_RTC_EVENT_LOG
   return std::unique_ptr<RtcEventLog>(new RtcEventLogImpl(clock));
 #else
-  return std::unique_ptr<RtcEventLog>(new RtcEventLogNullImpl());
+  return std::unique_ptr<RtcEventLog>();
 #endif  // ENABLE_RTC_EVENT_LOG
 }
 
-std::unique_ptr<RtcEventLog> RtcEventLog::CreateNull() {
-  return std::unique_ptr<RtcEventLog>(new RtcEventLogNullImpl());
-}
-
 }  // namespace webrtc