Add a force pipelining option to load flags.

net/http/http_pipelined_host_forced.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_HTTP_HTTP_PIPELINED_HOST_FORCED_H_
+#define NET_HTTP_HTTP_PIPELINED_HOST_FORCED_H_
+#pragma once
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "net/base/host_port_pair.h"
+#include "net/base/net_export.h"
+#include "net/http/http_pipelined_connection.h"
+#include "net/http/http_pipelined_host.h"
+#include "net/http/http_pipelined_host_capability.h"
+
+namespace base {
+class Value;
+}
+
+namespace net {
+
+class BoundNetLog;
+class ClientSocketHandle;
+class HttpPipelinedStream;
+class ProxyInfo;
+struct SSLConfig;
+
+// Manages a single pipelined connection for requests to a host that are forced
+// to use pipelining. Note that this is normally not used. It is intended to
+// test the user's connection for pipelining compatibility.
+class NET_EXPORT_PRIVATE HttpPipelinedHostForced
+    : public HttpPipelinedHost,
+      public HttpPipelinedConnection::Delegate {
+ public:
+  HttpPipelinedHostForced(HttpPipelinedHost::Delegate* delegate,
+                          const Key& key,
+                          HttpPipelinedConnection::Factory* factory);
+  virtual ~HttpPipelinedHostForced();
+
+  // HttpPipelinedHost interface
+  virtual HttpPipelinedStream* CreateStreamOnNewPipeline(
+      ClientSocketHandle* connection,
+      const SSLConfig& used_ssl_config,
+      const ProxyInfo& used_proxy_info,
+      const BoundNetLog& net_log,
+      bool was_npn_negotiated,
+      SSLClientSocket::NextProto protocol_negotiated) OVERRIDE;
+
+  virtual HttpPipelinedStream* CreateStreamOnExistingPipeline() OVERRIDE;
+
+  virtual bool IsExistingPipelineAvailable() const OVERRIDE;
+
+  virtual const Key& GetKey() const OVERRIDE;
+
+  virtual base::Value* PipelineInfoToValue() const OVERRIDE;
+
+  // HttpPipelinedConnection::Delegate interface
+
+  virtual void OnPipelineHasCapacity(
+      HttpPipelinedConnection* pipeline) OVERRIDE;
+
+  virtual void OnPipelineFeedback(
+      HttpPipelinedConnection* pipeline,
+      HttpPipelinedConnection::Feedback feedback) OVERRIDE;
+
+ private:
+  // Called when a pipeline is empty and there are no pending requests. Closes
+  // the connection.
+  void OnPipelineEmpty(HttpPipelinedConnection* pipeline);
+
+  HttpPipelinedHost::Delegate* delegate_;
+  const Key key_;
+  scoped_ptr<HttpPipelinedConnection> pipeline_;
+  scoped_ptr<HttpPipelinedConnection::Factory> factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(HttpPipelinedHostForced);
+};
+
+}  // namespace net
+
+#endif  // NET_HTTP_HTTP_PIPELINED_HOST_FORCED_H_