Move RtcEventLog object from inside VoiceEngine to Call.

webrtc/api/peerconnection.h

Index: webrtc/api/peerconnection.h
diff --git a/webrtc/api/peerconnection.h b/webrtc/api/peerconnection.h
index d715ecdf73d45574a1383a2c66c8f6e5fcaa8af9..c4e77550661d25d80897356aa3c1922454d0bca4 100644
--- a/webrtc/api/peerconnection.h
+++ b/webrtc/api/peerconnection.h
@@ -137,6 +137,10 @@ class PeerConnection : public PeerConnectionInterface,
 
   void RegisterUMAObserver(UMAObserver* observer) override;
 
+  bool StartRtcEventLog(rtc::PlatformFile file,
+                        int64_t max_size_bytes) override;
+  void StopRtcEventLog() override;
+
   void Close() override;
 
   // Virtual for unit tests.
@@ -356,6 +360,13 @@ class PeerConnection : public PeerConnectionInterface,
   // or nullptr if not found.
   DataChannel* FindDataChannelBySid(int sid) const;
 
+  // Starts recording an Rtc EventLog using the supplied platform file.
+  // This function should only be called from the worker thread.
+  bool StartRtcEventLog_w(rtc::PlatformFile file, int64_t max_size_bytes);
+  // Starts recording an Rtc EventLog using the supplied platform file.
+  // This function should only be called from the worker thread.
+  void StopRtcEventLog_w();
+
   // Storing the factory as a scoped reference pointer ensures that the memory
   // in the PeerConnectionFactoryImpl remains available as long as the
   // PeerConnection is running. It is passed to PeerConnection as a raw pointer.