Probing: Add support for exponential startup probing

webrtc/modules/remote_bitrate_estimator/transport_feedback_adapter_unittest.cc

 /*
  *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 22 matching lines @@
  public:
   TransportFeedbackAdapterTest()
       : clock_(0),
         bitrate_estimator_(nullptr),
         bitrate_controller_(this),
         receiver_estimated_bitrate_(0) {}
 
   virtual ~TransportFeedbackAdapterTest() {}
 
   virtual void SetUp() {
-    adapter_.reset(new TransportFeedbackAdapter(&bitrate_controller_, &clock_));
+    adapter_.reset(new TransportFeedbackAdapter(&clock_));
 
     bitrate_estimator_ = new MockRemoteBitrateEstimator();
     adapter_->SetBitrateEstimator(bitrate_estimator_);
   }
 
   virtual void TearDown() {
     adapter_.reset();
   }
 
  protected:
   // Proxy class used since TransportFeedbackAdapter will own the instance
   // passed at construction.
   class MockBitrateControllerAdapter : public MockBitrateController {
    public:
     explicit MockBitrateControllerAdapter(TransportFeedbackAdapterTest* owner)
         : MockBitrateController(), owner_(owner) {}
 
     ~MockBitrateControllerAdapter() override {}
 
-    void UpdateDelayBasedEstimate(uint32_t bitrate_bps) override {
+    void OnReceiveBitrateChanged(const std::vector<uint32_t>& ssrcs,
+                                 uint32_t bitrate_bps) override {
       owner_->receiver_estimated_bitrate_ = bitrate_bps;
     }
 
     TransportFeedbackAdapterTest* const owner_;
   };
 
   void OnReceivedEstimatedBitrate(uint32_t bitrate) {}
 
   void OnReceivedRtcpReceiverReport(const ReportBlockList& report_blocks,
                                     int64_t rtt,
@@ skipping 280 matching lines @@
           }));
   adapter_->OnTransportFeedback(*feedback.get());
 
   expected_packets.push_back(info);
 
   ComparePacketVectors(expected_packets, received_feedback);
 }
 
 }  // namespace test
 }  // namespace webrtc