Remove redundant local variable from OveruseDetector::Detect.

webrtc/modules/remote_bitrate_estimator/overuse_detector.cc

 /*
  *  Copyright (c) 2012 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 73 matching lines @@
   return hypothesis_;
 }
 
 BandwidthUsage OveruseDetector::Detect(double offset,
                                        double ts_delta,
                                        int num_of_deltas,
                                        int64_t now_ms) {
   if (num_of_deltas < 2) {
     return kBwNormal;
   }
-  const double prev_offset = prev_offset_;
-  prev_offset_ = offset;
   const double T = std::min(num_of_deltas, kMinNumDeltas) * offset;
   BWE_TEST_LOGGING_PLOT(1, "offset_ms#1", now_ms, offset);
   BWE_TEST_LOGGING_PLOT(1, "gamma_ms#1", now_ms, threshold_ / kMinNumDeltas);
   if (T > threshold_) {
     if (time_over_using_ == -1) {
       // Initialize the timer. Assume that we've been
       // over-using half of the time since the previous
       // sample.
       time_over_using_ = ts_delta / 2;
     } else {
       // Increment timer
       time_over_using_ += ts_delta;
     }
     overuse_counter_++;
     if (time_over_using_ > overusing_time_threshold_ && overuse_counter_ > 1) {
-      if (offset >= prev_offset) {
+      if (offset >= prev_offset_) {
         time_over_using_ = 0;
         overuse_counter_ = 0;
         hypothesis_ = kBwOverusing;
       }
     }
   } else if (T < -threshold_) {
     time_over_using_ = -1;
     overuse_counter_ = 0;
     hypothesis_ = kBwUnderusing;
   } else {
     time_over_using_ = -1;
     overuse_counter_ = 0;
     hypothesis_ = kBwNormal;
   }
+  prev_offset_ = offset;
 
   UpdateThreshold(T, now_ms);
 
   return hypothesis_;
 }
 
 void OveruseDetector::UpdateThreshold(double modified_offset, int64_t now_ms) {
   if (!in_experiment_)
     return;
 
@@ skipping 24 matching lines @@
   RTC_DCHECK(in_experiment_);
   double k_up = 0.0;
   double k_down = 0.0;
   overusing_time_threshold_ = kOverUsingTimeThreshold;
   if (ReadExperimentConstants(&k_up, &k_down)) {
     k_up_ = k_up;
     k_down_ = k_down;
   }
 }
 }  // namespace webrtc