RTCRtpSender with track behind RuntimeEnabled flag

third_party/WebKit/Source/web/tests/ActiveConnectionThrottlingTest.cpp

Index: third_party/WebKit/Source/web/tests/ActiveConnectionThrottlingTest.cpp
diff --git a/third_party/WebKit/Source/web/tests/ActiveConnectionThrottlingTest.cpp b/third_party/WebKit/Source/web/tests/ActiveConnectionThrottlingTest.cpp
index 4f92a0847c919c5ab96b5ad4a192576f5ff3d8e1..9310f33a0c910e6dbdd20f5fc2aaa46aa8d48ac4 100644
--- a/third_party/WebKit/Source/web/tests/ActiveConnectionThrottlingTest.cpp
+++ b/third_party/WebKit/Source/web/tests/ActiveConnectionThrottlingTest.cpp
@@ -7,6 +7,7 @@
 #include "public/platform/WebRTCError.h"
 #include "public/platform/WebRTCPeerConnectionHandler.h"
 #include "public/platform/WebRTCRtpReceiver.h"
+#include "public/platform/WebRTCRtpSender.h"
 #include "public/platform/WebRTCSessionDescription.h"
 #include "public/web/WebScriptSource.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -79,6 +80,10 @@ class MockWebRTCPeerConnectionHandler : public WebRTCPeerConnectionHandler {
   void RemoveStream(const WebMediaStream&) override {}
   void GetStats(const WebRTCStatsRequest&) override {}
   void GetStats(std::unique_ptr<WebRTCStatsReportCallback>) override {}
+  blink::WebVector<std::unique_ptr<blink::WebRTCRtpSender>> GetSenders()
+      override {
+    return blink::WebVector<std::unique_ptr<blink::WebRTCRtpSender>>();
+  }
   blink::WebVector<std::unique_ptr<blink::WebRTCRtpReceiver>> GetReceivers()
       override {
     return blink::WebVector<std::unique_ptr<blink::WebRTCRtpReceiver>>();