Remove GetFeedbackInterval in sender side BWE.

webrtc/modules/congestion_controller/delay_based_bwe_unittest.cc

Index: webrtc/modules/congestion_controller/delay_based_bwe_unittest.cc
diff --git a/webrtc/modules/congestion_controller/delay_based_bwe_unittest.cc b/webrtc/modules/congestion_controller/delay_based_bwe_unittest.cc
index e751013a5db8e2cc76b6df8683eae876fffe0759..a91ac41547f3ad6512662e60c9984c3f1b242b5e 100644
--- a/webrtc/modules/congestion_controller/delay_based_bwe_unittest.cc
+++ b/webrtc/modules/congestion_controller/delay_based_bwe_unittest.cc
@@ -124,43 +124,43 @@ TEST_F(DelayBasedBweTest, RateIncreaseReordering) {
 }
 
 TEST_F(DelayBasedBweTest, RateIncreaseRtpTimestamps) {
-  RateIncreaseRtpTimestampsTestHelper(1240);
+  RateIncreaseRtpTimestampsTestHelper(1116);
 }
 
 TEST_F(DelayBasedBweTest, CapacityDropOneStream) {
-  CapacityDropTestHelper(1, false, 633, 0);
+  CapacityDropTestHelper(1, false, 599, 0);
 }
 
 TEST_F(DelayBasedBweTest, CapacityDropPosOffsetChange) {
-  CapacityDropTestHelper(1, false, 200, 30000);
+  CapacityDropTestHelper(1, false, 166, 30000);
 }
 
 TEST_F(DelayBasedBweTest, CapacityDropNegOffsetChange) {
-  CapacityDropTestHelper(1, false, 733, -30000);
+  CapacityDropTestHelper(1, false, 299, -30000);
 }
 
 TEST_F(DelayBasedBweTest, CapacityDropOneStreamWrap) {
-  CapacityDropTestHelper(1, true, 633, 0);
+  CapacityDropTestHelper(1, true, 599, 0);
 }
 
 TEST_F(DelayBasedBweTest, CapacityDropTwoStreamsWrap) {
-  CapacityDropTestHelper(2, true, 767, 0);
+  CapacityDropTestHelper(2, true, 600, 0);
 }
 
 TEST_F(DelayBasedBweTest, CapacityDropThreeStreamsWrap) {
-  CapacityDropTestHelper(3, true, 633, 0);
+  CapacityDropTestHelper(3, true, 620, 0);
 }
 
 TEST_F(DelayBasedBweTest, CapacityDropThirteenStreamsWrap) {
-  CapacityDropTestHelper(13, true, 733, 0);
+  CapacityDropTestHelper(13, true, 620, 0);
 }
 
 TEST_F(DelayBasedBweTest, CapacityDropNineteenStreamsWrap) {
-  CapacityDropTestHelper(19, true, 667, 0);
+  CapacityDropTestHelper(19, true, 620, 0);
 }
 
 TEST_F(DelayBasedBweTest, CapacityDropThirtyStreamsWrap) {
-  CapacityDropTestHelper(30, true, 667, 0);
+  CapacityDropTestHelper(30, true, 600, 0);
 }
 
 TEST_F(DelayBasedBweTest, TestTimestampGrouping) {