Remove bitrate cap for AdaptiveVideoSource and increase other caps to 25 Mbps.

webrtc/modules/remote_bitrate_estimator/test/estimators/nada_unittest.cc

Index: webrtc/modules/remote_bitrate_estimator/test/estimators/nada_unittest.cc
diff --git a/webrtc/modules/remote_bitrate_estimator/test/estimators/nada_unittest.cc b/webrtc/modules/remote_bitrate_estimator/test/estimators/nada_unittest.cc
index ad87cb306cfb27e5b48cdaf33b46f3fbf4087547..6ce15b9935e3d302d3fc5aec2e2af2687a6f143a 100644
--- a/webrtc/modules/remote_bitrate_estimator/test/estimators/nada_unittest.cc
+++ b/webrtc/modules/remote_bitrate_estimator/test/estimators/nada_unittest.cc
@@ -228,7 +228,7 @@ TEST_F(NadaSenderSideTest, GradualRateUpdate) {
   const int64_t kDeltaSMs = 20;
   const int64_t kRefSignalMs = 20;
   const int64_t kOneWayDelayMs = 50;
-  int original_bitrate = 2 * NadaBweSender::kMinNadaBitrateKbps;
+  int original_bitrate = 5 * NadaBweSender::kMinNadaBitrateKbps;
   size_t receiving_rate = static_cast<size_t>(original_bitrate);
   int64_t send_time_ms = nada_sender_.NowMs() - kOneWayDelayMs;