Move BWE period calculation from ProbingIntervalEstimator to AimdRateControl.

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 44407b37e95ef2d68668879636ab481821216c3c..71e82099c4fbea6d6ee34b796c66a462678c99c0 100644
--- a/webrtc/modules/congestion_controller/delay_based_bwe_unittest.cc
+++ b/webrtc/modules/congestion_controller/delay_based_bwe_unittest.cc
@@ -116,11 +116,11 @@ TEST_F(DelayBasedBweTest, ProbeDetectionSlowerArrivalHighBitrate) {
   EXPECT_NEAR(bitrate_observer_.latest_bitrate(), 4000000u, 10000u);
 }
 
-TEST_F(DelayBasedBweTest, GetProbingInterval) {
-  int64_t default_interval_ms = bitrate_estimator_->GetProbingIntervalMs();
+TEST_F(DelayBasedBweTest, GetExpectedBwePeriodMs) {
+  int64_t default_interval_ms = bitrate_estimator_->GetExpectedBwePeriodMs();
   EXPECT_GT(default_interval_ms, 0);
   CapacityDropTestHelper(1, true, 333, 0);
-  int64_t interval_ms = bitrate_estimator_->GetProbingIntervalMs();
+  int64_t interval_ms = bitrate_estimator_->GetExpectedBwePeriodMs();
   EXPECT_GT(interval_ms, 0);
   EXPECT_NE(interval_ms, default_interval_ms);
 }