Disable enforced throttling for URL requests....

net/url_request/url_request_http_job.cc

Index: net/url_request/url_request_http_job.cc
===================================================================
--- net/url_request/url_request_http_job.cc	(revision 72103)
+++ net/url_request/url_request_http_job.cc	(working copy)
@@ -219,15 +219,8 @@
     rv = request_->context()->http_transaction_factory()->CreateTransaction(
         &transaction_);
     if (rv == OK) {
-      if (!throttling_entry_->IsDuringExponentialBackoff() ||
-          !net::URLRequestThrottlerManager::GetInstance()->
-              enforce_throttling()) {
-        rv = transaction_->Start(
-            &request_info_, &start_callback_, request_->net_log());
-      } else {
-        // Special error code for the exponential back-off module.
-        rv = ERR_TEMPORARILY_THROTTLED;
-      }
+      rv = transaction_->Start(
+          &request_info_, &start_callback_, request_->net_log());
       // Make sure the context is alive for the duration of the
       // transaction.
       context_ = request_->context();