Refactoring: move ownership of RtcEventLog from Call to PeerConnection

webrtc/call/rampup_tests.h

Index: webrtc/call/rampup_tests.h
diff --git a/webrtc/call/rampup_tests.h b/webrtc/call/rampup_tests.h
index f3779e21f7137438cb518d9029a407a2372e1c86..da1ca745ba202a8ddb1ccdf1c25dc7a63d4b57be 100644
--- a/webrtc/call/rampup_tests.h
+++ b/webrtc/call/rampup_tests.h
@@ -17,6 +17,7 @@
 
 #include "webrtc/base/event.h"
 #include "webrtc/call.h"
+#include "webrtc/logging/rtc_event_log/rtc_event_log.h"
 #include "webrtc/test/call_test.h"
 
 namespace webrtc {
@@ -57,6 +58,7 @@ class RampUpTester : public test::EndToEndTest {
                     const std::string& units) const;
   void TriggerTestDone();
 
+  webrtc::RtcEventLogNullImpl event_log_;
   rtc::Event event_;
   Clock* const clock_;
   FakeNetworkPipe::Config forward_transport_config_;