Added functions on libjingle API to start and stop the recording of an RtcEventLog.

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 a4b7cadadb7c3970865380866cbf320805773175..02bbdc6001caf3668e53f21fd68490efe92bc82c 100644
--- a/webrtc/call/rtc_event_log.h
+++ b/webrtc/call/rtc_event_log.h
@@ -13,6 +13,7 @@
 
 #include <string>
 
+#include "webrtc/base/platform_file.h"
 #include "webrtc/base/scoped_ptr.h"
 #include "webrtc/video_receive_stream.h"
 #include "webrtc/video_send_stream.h"
@@ -41,6 +42,11 @@ class RtcEventLog {
   // If the file cannot be opened, the RtcEventLog will not start logging.
   virtual void StartLogging(const std::string& file_name, int duration_ms) = 0;
 
+  // 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;
+
   virtual void StopLogging() = 0;
 
   // Logs configuration information for webrtc::VideoReceiveStream