Add load flag indicating a request is probably the result of a user gesture.

net/url_request/url_request_http_job.cc

 // Copyright (c) 2011 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.
 
 #include "net/url_request/url_request_http_job.h"
 
 #include "base/bind.h"
 #include "base/base_switches.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
@@ skipping 379 matching lines @@
     username_.clear();
     password_.clear();
   } else {
     DCHECK(request_->context());
     DCHECK(request_->context()->http_transaction_factory());
 
     rv = request_->context()->http_transaction_factory()->CreateTransaction(
         &transaction_);
     if (rv == OK) {
       if (!URLRequestThrottlerManager::GetInstance()->enforce_throttling() ||
-          !throttling_entry_->IsDuringExponentialBackoff()) {
+          !throttling_entry_->ShouldRejectRequest(request_info_.load_flags)) {
         rv = transaction_->Start(
             &request_info_, &start_callback_, request_->net_log());
         start_time_ = base::TimeTicks::Now();
       } else {
         // Special error code for the exponential back-off module.
         rv = ERR_TEMPORARILY_THROTTLED;
       }
       // Make sure the context is alive for the duration of the
       // transaction.
       context_ = request_->context();
@@ skipping 1066 matching lines @@
   if (done_)
     return;
   done_ = true;
 
   RecordPerfHistograms(reason);
   if (reason == FINISHED)
     RecordCompressionHistograms();
 }
 
 }  // namespace net