Perform probing on network route change.

webrtc/modules/remote_bitrate_estimator/send_time_history_unittest.cc

Index: webrtc/modules/remote_bitrate_estimator/send_time_history_unittest.cc
diff --git a/webrtc/modules/remote_bitrate_estimator/send_time_history_unittest.cc b/webrtc/modules/remote_bitrate_estimator/send_time_history_unittest.cc
index ce7d021587605005df2016813d599d0e48defbdf..0855817d3c3778ccf3e96b8181e90d8cfc9e6570 100644
--- a/webrtc/modules/remote_bitrate_estimator/send_time_history_unittest.cc
+++ b/webrtc/modules/remote_bitrate_estimator/send_time_history_unittest.cc
@@ -238,5 +238,28 @@ TEST_F(SendTimeHistoryTest, InterlievedGetAndRemove) {
   EXPECT_EQ(packets[2], info3);
 }
 
+TEST_F(SendTimeHistoryTest, Clear) {
+  const uint16_t kSeqNo = 1;
+  const int64_t kTimestamp = 2;
+  PacketInfo packets[] = {{0, kTimestamp, kSeqNo, 0, 0},
+                          {0, kTimestamp + 1, kSeqNo + 1, 0, 1}};
+
+  AddPacketWithSendTime(packets[0].sequence_number, packets[0].payload_size,
+                        packets[0].send_time_ms, 0);
+  AddPacketWithSendTime(packets[1].sequence_number, packets[1].payload_size,
+                        packets[1].send_time_ms, 1);
+  PacketInfo info(0, 0, packets[0].sequence_number, 0, 0);
+  EXPECT_TRUE(history_.GetInfo(&info, true));
+  EXPECT_EQ(packets[0], info);
+
+  AddPacketWithSendTime(packets[2].sequence_number, packets[2].payload_size,
+                        packets[2].send_time_ms, 2);
+
+  history_.Clear();
+
+  PacketInfo info2(0, 0, packets[1].sequence_number, 0, 1);
+  EXPECT_FALSE(history_.GetInfo(&info2, true));
+}
+
 }  // namespace test
 }  // namespace webrtc