Remove HTTP pipelining support.

net/url_request/url_request.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.
 
 #include "net/url_request/url_request.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/compiler_specific.h"
@@ skipping 64 matching lines @@
 // True once the first URLRequest was started.
 bool g_url_requests_started = false;
 
 // True if cookies are accepted by default.
 bool g_default_can_use_cookies = true;
 
 // When the URLRequest first assempts load timing information, it has the times
 // at which each event occurred.  The API requires the time which the request
 // was blocked on each phase.  This function handles the conversion.
 //
-// In the case of reusing a SPDY session or HTTP pipeline, old proxy results may
-// have been reused, so proxy resolution times may be before the request was
-// started.
+// In the case of reusing a SPDY session, old proxy results may have been
+// reused, so proxy resolution times may be before the request was started.
 //
 // Due to preconnect and late binding, it is also possible for the connection
 // attempt to start before a request has been started, or proxy resolution
 // completed.
 //
 // This functions fixes both those cases.
 void ConvertRealLoadTimesToBlockingTimes(
     net::LoadTimingInfo* load_timing_info) {
   DCHECK(!load_timing_info->request_start.is_null());
 
@@ skipping 1148 matching lines @@
       new base::debug::StackTrace(NULL, 0);
   *stack_trace_copy = stack_trace;
   stack_trace_.reset(stack_trace_copy);
 }
 
 const base::debug::StackTrace* URLRequest::stack_trace() const {
   return stack_trace_.get();
 }
 
 }  // namespace net