Only use payload size within the receive/send interval for bitrate probing.

webrtc/modules/congestion_controller/probe_bitrate_estimator_unittest.cc

Index: webrtc/modules/congestion_controller/probe_bitrate_estimator_unittest.cc
diff --git a/webrtc/modules/congestion_controller/probe_bitrate_estimator_unittest.cc b/webrtc/modules/congestion_controller/probe_bitrate_estimator_unittest.cc
index e3bbd5a22793e2d8a73c0a277ae02f9fc036acb9..f09de1dc57227341d995bdbd8fc9dc5bc4b45792 100644
--- a/webrtc/modules/congestion_controller/probe_bitrate_estimator_unittest.cc
+++ b/webrtc/modules/congestion_controller/probe_bitrate_estimator_unittest.cc
@@ -125,4 +125,26 @@ TEST_F(TestProbeBitrateEstimator, OldProbe) {
   EXPECT_EQ(1ul, results_.size());
 }
 
+TEST_F(TestProbeBitrateEstimator, IgnoreSizeLastSendPacket) {
+  AddPacketFeedback(0, 1000, 0, 10);
+  AddPacketFeedback(0, 1000, 10, 20);
+  AddPacketFeedback(0, 1000, 20, 30);
+  AddPacketFeedback(0, 1000, 30, 40);
+  AddPacketFeedback(0, 1500, 40, 50);

[danilchap, 2016/08/22 13:53:35]

May be add note that increased packet size increase received speed, but not send
speed, and since minimum of those two is returned, CheckResult validates send
bitrate is unaffected by last packet.

[philipel, 2016/08/22 14:06:40]

Acknowledged.

+
+  CheckResult(0, 800000, 10, 40);

[danilchap, 2016/08/22 13:53:35]

May be add a note that 1st CheckResult check bitrate after 4 packets, last -
after 5 packets.

[philipel, 2016/08/22 14:06:40]

Acknowledged.

+  CheckResult(1, 800000, 10, 50);
+}
+
+TEST_F(TestProbeBitrateEstimator, IgnoreSizeFirstReceivePacket) {
+  AddPacketFeedback(0, 1500, 0, 10);
+  AddPacketFeedback(0, 1000, 10, 20);
+  AddPacketFeedback(0, 1000, 20, 30);
+  AddPacketFeedback(0, 1000, 30, 40);
+  AddPacketFeedback(0, 1000, 40, 50);
+
+  CheckResult(0, 800000, 10, 40);

[danilchap, 2016/08/22 13:53:35]

does it make sense to CheckResult twice in this test?

[philipel, 2016/08/22 14:06:40]

Copy-paste ftw :)

But no, it doesn't.

+  CheckResult(1, 800000, 10, 50);
+}
+
 }  // namespace webrtc