BackoffEntry: Add the option to always use a delay.

net/url_request/url_request_throttler_entry.h

 // 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.
 
 #ifndef NET_URL_REQUEST_URL_REQUEST_THROTTLER_ENTRY_H_
 #define NET_URL_REQUEST_URL_REQUEST_THROTTLER_ENTRY_H_
 #pragma once
 
 #include <queue>
 #include <string>
@@ skipping 25 matching lines @@
   // Sliding window period.
   static const int kDefaultSlidingWindowPeriodMs;
 
   // Maximum number of requests allowed in sliding window period.
   static const int kDefaultMaxSendThreshold;
 
   // Number of initial errors to ignore before starting exponential back-off.
   static const int kDefaultNumErrorsToIgnore;
 
   // Initial delay for exponential back-off.
-  static const int kDefaultInitialBackoffMs;
+  static const int kDefaultInitialDelayMs;
 
   // Factor by which the waiting time will be multiplied.
   static const double kDefaultMultiplyFactor;
 
   // Fuzzing percentage. ex: 10% will spread requests randomly
   // between 90%-100% of the calculated time.
   static const double kDefaultJitterFactor;
 
   // Maximum amount of time we are willing to delay our request.
   static const int kDefaultMaximumBackoffMs;
@@ skipping 123 matching lines @@
   std::string url_id_;
 
   BoundNetLog net_log_;
 
   DISALLOW_COPY_AND_ASSIGN(URLRequestThrottlerEntry);
 };
 
 }  // namespace net
 
 #endif  // NET_URL_REQUEST_URL_REQUEST_THROTTLER_ENTRY_H_