Remove X-Chrome-Exponential-Throttling header

net/url_request/url_request_throttler_simulation_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // The tests in this file attempt to verify the following through simulation:
 // a) That a server experiencing overload will actually benefit from the
 //    anti-DDoS throttling logic, i.e. that its traffic spike will subside
 //    and be distributed over a longer period of time;
 // b) That "well-behaved" clients of a server under DDoS attack actually
 //    benefit from the anti-DDoS throttling logic; and
@@ skipping 409 matching lines @@
     } else {
       effective_delay += current_jitter;
     }
 
     if (throttler_entry_->ImplGetTimeNow() - time_of_last_attempt_ >
         effective_delay) {
       if (!throttler_entry_->ShouldRejectRequest(
               server_->mock_request(),
               server_->context().network_delegate())) {
         int status_code = server_->HandleRequest();
-        MockURLRequestThrottlerHeaderAdapter response_headers(status_code);
-        throttler_entry_->UpdateWithResponse(std::string(), &response_headers);
+        throttler_entry_->UpdateWithResponse(status_code);
 
         if (status_code == 200) {
           if (results_)
             results_->AddSuccess();
 
           if (last_attempt_was_failure_) {
             last_downtime_duration_ =
                 throttler_entry_->ImplGetTimeNow() - time_of_last_success_;
           }
 
@@ skipping 301 matching lines @@
     trials[i].PrintTrialDescription();
     trials[i].stats.ReportTrialResult(increase_ratio);
   }
 
   VerboseOut("Average increase ratio was %.4f\n", average_increase_ratio);
   VerboseOut("Maximum increase ratio was %.4f\n", max_increase_ratio);
 }
 
 }  // namespace
 }  // namespace net