Fix experiment name in BitrateControllerTest.

webrtc/modules/bitrate_controller/bitrate_controller_unittest.cc

Index: webrtc/modules/bitrate_controller/bitrate_controller_unittest.cc
diff --git a/webrtc/modules/bitrate_controller/bitrate_controller_unittest.cc b/webrtc/modules/bitrate_controller/bitrate_controller_unittest.cc
index 6f269a4e8c6d298e6f0a3d4116425aef872710b4..0e080eedf4938c0c43e4b10cbbcaf6542c61d19d 100644
--- a/webrtc/modules/bitrate_controller/bitrate_controller_unittest.cc
+++ b/webrtc/modules/bitrate_controller/bitrate_controller_unittest.cc
@@ -412,7 +412,7 @@ TEST_F(BitrateControllerTest, SetReservedBitrate) {
 TEST_F(BitrateControllerTest, TimeoutsWithoutFeedback) {
   {
     webrtc::test::ScopedFieldTrials override_field_trials(
-        "WebRTC-SendSideBwe/Enabled/");
+        "WebRTC-FeedbackTimeout/Enabled/");
     SetUp();
     int expected_bitrate_bps = 300000;
     controller_->SetBitrates(300000, kDefaultMinBitrateBps,