Remove HTTP pipelining support.

net/http/http_stream_factory.h

Index: net/http/http_stream_factory.h
diff --git a/net/http/http_stream_factory.h b/net/http/http_stream_factory.h
index a0623d7313ad51fbd5f93fc3b9b3acad9cff04b3..f3b0203ccfbb2befd23db811f886b469ca9ee8ee 100644
--- a/net/http/http_stream_factory.h
+++ b/net/http/http_stream_factory.h
@@ -1,250 +1,245 @@
-// 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_STREAM_FACTORY_H_
-#define NET_HTTP_HTTP_STREAM_FACTORY_H_
-
-#include <list>
-#include <string>
-
-#include "base/basictypes.h"
-#include "base/memory/ref_counted.h"
-#include "base/strings/string16.h"
-#include "net/base/completion_callback.h"
-#include "net/base/load_states.h"
-#include "net/base/net_export.h"
-#include "net/base/request_priority.h"
-#include "net/http/http_server_properties.h"
-// This file can be included from net/http even though
-// it is in net/websockets because it doesn't
-// introduce any link dependency to net/websockets.
-#include "net/websockets/websocket_handshake_stream_base.h"
-
-class GURL;
-
-namespace base {
-class Value;
-}
-
-namespace net {
-
-class AuthCredentials;
-class BoundNetLog;
-class HostMappingRules;
-class HostPortPair;
-class HttpAuthController;
-class HttpNetworkSession;
-class HttpResponseInfo;
-class HttpServerProperties;
-class HttpStreamBase;
-class ProxyInfo;
-class SSLCertRequestInfo;
-class SSLInfo;
-struct HttpRequestInfo;
-struct SSLConfig;
-
-// The HttpStreamRequest is the client's handle to the worker object which
-// handles the creation of an HttpStream.  While the HttpStream is being
-// created, this object is the creator's handle for interacting with the
-// HttpStream creation process.  The request is cancelled by deleting it, after
-// which no callbacks will be invoked.
-class NET_EXPORT_PRIVATE HttpStreamRequest {
- public:
-  // The HttpStreamRequest::Delegate is a set of callback methods for a
-  // HttpStreamRequestJob.  Generally, only one of these methods will be
-  // called as a result of a stream request.
-  class NET_EXPORT_PRIVATE Delegate {
-   public:
-    virtual ~Delegate() {}
-
-    // This is the success case for RequestStream.
-    // |stream| is now owned by the delegate.
-    // |used_ssl_config| indicates the actual SSL configuration used for this
-    // stream, since the HttpStreamRequest may have modified the configuration
-    // during stream processing.
-    // |used_proxy_info| indicates the actual ProxyInfo used for this stream,
-    // since the HttpStreamRequest performs the proxy resolution.
-    virtual void OnStreamReady(
-        const SSLConfig& used_ssl_config,
-        const ProxyInfo& used_proxy_info,
-        HttpStreamBase* stream) = 0;
-
-    // This is the success case for RequestWebSocketHandshakeStream.
-    // |stream| is now owned by the delegate.
-    // |used_ssl_config| indicates the actual SSL configuration used for this
-    // stream, since the HttpStreamRequest may have modified the configuration
-    // during stream processing.
-    // |used_proxy_info| indicates the actual ProxyInfo used for this stream,
-    // since the HttpStreamRequest performs the proxy resolution.
-    virtual void OnWebSocketHandshakeStreamReady(
-        const SSLConfig& used_ssl_config,
-        const ProxyInfo& used_proxy_info,
-        WebSocketHandshakeStreamBase* stream) = 0;
-
-    // This is the failure to create a stream case.
-    // |used_ssl_config| indicates the actual SSL configuration used for this
-    // stream, since the HttpStreamRequest may have modified the configuration
-    // during stream processing.
-    virtual void OnStreamFailed(int status,
-                                const SSLConfig& used_ssl_config) = 0;
-
-    // Called when we have a certificate error for the request.
-    // |used_ssl_config| indicates the actual SSL configuration used for this
-    // stream, since the HttpStreamRequest may have modified the configuration
-    // during stream processing.
-    virtual void OnCertificateError(int status,
-                                    const SSLConfig& used_ssl_config,
-                                    const SSLInfo& ssl_info) = 0;
-
-    // This is the failure case where we need proxy authentication during
-    // proxy tunnel establishment.  For the tunnel case, we were unable to
-    // create the HttpStream, so the caller provides the auth and then resumes
-    // the HttpStreamRequest.
-    //
-    // For the non-tunnel case, the caller will discover the authentication
-    // failure when reading response headers. At that point, he will handle the
-    // authentication failure and restart the HttpStreamRequest entirely.
-    //
-    // Ownership of |auth_controller| and |proxy_response| are owned
-    // by the HttpStreamRequest. |proxy_response| is not guaranteed to be usable
-    // after the lifetime of this callback.  The delegate may take a reference
-    // to |auth_controller| if it is needed beyond the lifetime of this
-    // callback.
-    //
-    // |used_ssl_config| indicates the actual SSL configuration used for this
-    // stream, since the HttpStreamRequest may have modified the configuration
-    // during stream processing.
-    virtual void OnNeedsProxyAuth(const HttpResponseInfo& proxy_response,
-                                  const SSLConfig& used_ssl_config,
-                                  const ProxyInfo& used_proxy_info,
-                                  HttpAuthController* auth_controller) = 0;
-
-    // This is the failure for SSL Client Auth
-    // Ownership of |cert_info| is retained by the HttpStreamRequest.  The
-    // delegate may take a reference if it needs the cert_info beyond the
-    // lifetime of this callback.
-    virtual void OnNeedsClientAuth(const SSLConfig& used_ssl_config,
-                                   SSLCertRequestInfo* cert_info) = 0;
-
-    // This is the failure of the CONNECT request through an HTTPS proxy.
-    // Headers can be read from |response_info|, while the body can be read
-    // from |stream|.
-    //
-    // |used_ssl_config| indicates the actual SSL configuration used for this
-    // stream, since the HttpStreamRequest may have modified the configuration
-    // during stream processing.
-    //
-    // |used_proxy_info| indicates the actual ProxyInfo used for this stream,
-    // since the HttpStreamRequest performs the proxy resolution.
-    //
-    // Ownership of |stream| is transferred to the delegate.
-    virtual void OnHttpsProxyTunnelResponse(
-        const HttpResponseInfo& response_info,
-        const SSLConfig& used_ssl_config,
-        const ProxyInfo& used_proxy_info,
-        HttpStreamBase* stream) = 0;
-  };
-
-  virtual ~HttpStreamRequest() {}
-
-  // When a HttpStream creation process is stalled due to necessity
-  // of Proxy authentication credentials, the delegate OnNeedsProxyAuth
-  // will have been called.  It now becomes the delegate's responsibility
-  // to collect the necessary credentials, and then call this method to
-  // resume the HttpStream creation process.
-  virtual int RestartTunnelWithProxyAuth(
-      const AuthCredentials& credentials) = 0;
-
-  // Called when the priority of the parent transaction changes.
-  virtual void SetPriority(RequestPriority priority) = 0;
-
-  // Returns the LoadState for the request.
-  virtual LoadState GetLoadState() const = 0;
-
-  // Returns true if TLS/NPN was negotiated for this stream.
-  virtual bool was_npn_negotiated() const = 0;
-
-  // Protocol negotiated with the server.
-  virtual NextProto protocol_negotiated() const = 0;
-
-  // Returns true if this stream is being fetched over SPDY.
-  virtual bool using_spdy() const = 0;
-};
-
-// The HttpStreamFactory defines an interface for creating usable HttpStreams.
-class NET_EXPORT HttpStreamFactory {
- public:
-  virtual ~HttpStreamFactory();
-
-  void ProcessAlternateProtocol(
-      const base::WeakPtr<HttpServerProperties>& http_server_properties,
-      const std::string& alternate_protocol_str,
-      const HostPortPair& http_host_port_pair,
-      const HttpNetworkSession& session);
-
-  GURL ApplyHostMappingRules(const GURL& url, HostPortPair* endpoint);
-
-  // Virtual interface methods.
-
-  // Request a stream.
-  // Will call delegate->OnStreamReady on successful completion.
-  virtual HttpStreamRequest* RequestStream(
-      const HttpRequestInfo& info,
-      RequestPriority priority,
-      const SSLConfig& server_ssl_config,
-      const SSLConfig& proxy_ssl_config,
-      HttpStreamRequest::Delegate* delegate,
-      const BoundNetLog& net_log) = 0;
-
-  // Request a WebSocket handshake stream.
-  // Will call delegate->OnWebSocketHandshakeStreamReady on successful
-  // completion.
-  virtual HttpStreamRequest* RequestWebSocketHandshakeStream(
-      const HttpRequestInfo& info,
-      RequestPriority priority,
-      const SSLConfig& server_ssl_config,
-      const SSLConfig& proxy_ssl_config,
-      HttpStreamRequest::Delegate* delegate,
-      WebSocketHandshakeStreamBase::CreateHelper* create_helper,
-      const BoundNetLog& net_log) = 0;
-
-  // Requests that enough connections for |num_streams| be opened.
-  virtual void PreconnectStreams(int num_streams,
-                                 const HttpRequestInfo& info,
-                                 RequestPriority priority,
-                                 const SSLConfig& server_ssl_config,
-                                 const SSLConfig& proxy_ssl_config) = 0;
-
-  // If pipelining is supported, creates a Value summary of the currently active
-  // pipelines. Caller assumes ownership of the returned value. Otherwise,
-  // returns an empty Value.
-  virtual base::Value* PipelineInfoToValue() const = 0;
-
-  virtual const HostMappingRules* GetHostMappingRules() const = 0;
-
-  // Static settings
-
-  // Reset all static settings to initialized values. Used to init test suite.
-  static void ResetStaticSettingsToInit();
-
-  // Turns spdy on or off.
-  // TODO(mmenke):  Figure out if this can be made a property of the
-  //                HttpNetworkSession.
-  static void set_spdy_enabled(bool value) {
-    spdy_enabled_ = value;
-  }
-  static bool spdy_enabled() { return spdy_enabled_; }
-
- protected:
-  HttpStreamFactory();
-
- private:
-  static bool spdy_enabled_;
-
-  DISALLOW_COPY_AND_ASSIGN(HttpStreamFactory);
-};
-
-}  // namespace net
-
-#endif  // NET_HTTP_HTTP_STREAM_FACTORY_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_STREAM_FACTORY_H_
+#define NET_HTTP_HTTP_STREAM_FACTORY_H_
+
+#include <list>
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/memory/ref_counted.h"
+#include "base/strings/string16.h"
+#include "net/base/completion_callback.h"
+#include "net/base/load_states.h"
+#include "net/base/net_export.h"
+#include "net/base/request_priority.h"
+#include "net/http/http_server_properties.h"
+// This file can be included from net/http even though
+// it is in net/websockets because it doesn't
+// introduce any link dependency to net/websockets.
+#include "net/websockets/websocket_handshake_stream_base.h"
+
+class GURL;
+
+namespace base {
+class Value;
+}
+
+namespace net {
+
+class AuthCredentials;
+class BoundNetLog;
+class HostMappingRules;
+class HostPortPair;
+class HttpAuthController;
+class HttpNetworkSession;
+class HttpResponseInfo;
+class HttpServerProperties;
+class HttpStreamBase;
+class ProxyInfo;
+class SSLCertRequestInfo;
+class SSLInfo;
+struct HttpRequestInfo;
+struct SSLConfig;
+
+// The HttpStreamRequest is the client's handle to the worker object which
+// handles the creation of an HttpStream.  While the HttpStream is being
+// created, this object is the creator's handle for interacting with the
+// HttpStream creation process.  The request is cancelled by deleting it, after
+// which no callbacks will be invoked.
+class NET_EXPORT_PRIVATE HttpStreamRequest {
+ public:
+  // The HttpStreamRequest::Delegate is a set of callback methods for a
+  // HttpStreamRequestJob.  Generally, only one of these methods will be
+  // called as a result of a stream request.
+  class NET_EXPORT_PRIVATE Delegate {
+   public:
+    virtual ~Delegate() {}
+
+    // This is the success case for RequestStream.
+    // |stream| is now owned by the delegate.
+    // |used_ssl_config| indicates the actual SSL configuration used for this
+    // stream, since the HttpStreamRequest may have modified the configuration
+    // during stream processing.
+    // |used_proxy_info| indicates the actual ProxyInfo used for this stream,
+    // since the HttpStreamRequest performs the proxy resolution.
+    virtual void OnStreamReady(
+        const SSLConfig& used_ssl_config,
+        const ProxyInfo& used_proxy_info,
+        HttpStreamBase* stream) = 0;
+
+    // This is the success case for RequestWebSocketHandshakeStream.
+    // |stream| is now owned by the delegate.
+    // |used_ssl_config| indicates the actual SSL configuration used for this
+    // stream, since the HttpStreamRequest may have modified the configuration
+    // during stream processing.
+    // |used_proxy_info| indicates the actual ProxyInfo used for this stream,
+    // since the HttpStreamRequest performs the proxy resolution.
+    virtual void OnWebSocketHandshakeStreamReady(
+        const SSLConfig& used_ssl_config,
+        const ProxyInfo& used_proxy_info,
+        WebSocketHandshakeStreamBase* stream) = 0;
+
+    // This is the failure to create a stream case.
+    // |used_ssl_config| indicates the actual SSL configuration used for this
+    // stream, since the HttpStreamRequest may have modified the configuration
+    // during stream processing.
+    virtual void OnStreamFailed(int status,
+                                const SSLConfig& used_ssl_config) = 0;
+
+    // Called when we have a certificate error for the request.
+    // |used_ssl_config| indicates the actual SSL configuration used for this
+    // stream, since the HttpStreamRequest may have modified the configuration
+    // during stream processing.
+    virtual void OnCertificateError(int status,
+                                    const SSLConfig& used_ssl_config,
+                                    const SSLInfo& ssl_info) = 0;
+
+    // This is the failure case where we need proxy authentication during
+    // proxy tunnel establishment.  For the tunnel case, we were unable to
+    // create the HttpStream, so the caller provides the auth and then resumes
+    // the HttpStreamRequest.
+    //
+    // For the non-tunnel case, the caller will discover the authentication
+    // failure when reading response headers. At that point, he will handle the
+    // authentication failure and restart the HttpStreamRequest entirely.
+    //
+    // Ownership of |auth_controller| and |proxy_response| are owned
+    // by the HttpStreamRequest. |proxy_response| is not guaranteed to be usable
+    // after the lifetime of this callback.  The delegate may take a reference
+    // to |auth_controller| if it is needed beyond the lifetime of this
+    // callback.
+    //
+    // |used_ssl_config| indicates the actual SSL configuration used for this
+    // stream, since the HttpStreamRequest may have modified the configuration
+    // during stream processing.
+    virtual void OnNeedsProxyAuth(const HttpResponseInfo& proxy_response,
+                                  const SSLConfig& used_ssl_config,
+                                  const ProxyInfo& used_proxy_info,
+                                  HttpAuthController* auth_controller) = 0;
+
+    // This is the failure for SSL Client Auth
+    // Ownership of |cert_info| is retained by the HttpStreamRequest.  The
+    // delegate may take a reference if it needs the cert_info beyond the
+    // lifetime of this callback.
+    virtual void OnNeedsClientAuth(const SSLConfig& used_ssl_config,
+                                   SSLCertRequestInfo* cert_info) = 0;
+
+    // This is the failure of the CONNECT request through an HTTPS proxy.
+    // Headers can be read from |response_info|, while the body can be read
+    // from |stream|.
+    //
+    // |used_ssl_config| indicates the actual SSL configuration used for this
+    // stream, since the HttpStreamRequest may have modified the configuration
+    // during stream processing.
+    //
+    // |used_proxy_info| indicates the actual ProxyInfo used for this stream,
+    // since the HttpStreamRequest performs the proxy resolution.
+    //
+    // Ownership of |stream| is transferred to the delegate.
+    virtual void OnHttpsProxyTunnelResponse(
+        const HttpResponseInfo& response_info,
+        const SSLConfig& used_ssl_config,
+        const ProxyInfo& used_proxy_info,
+        HttpStreamBase* stream) = 0;
+  };
+
+  virtual ~HttpStreamRequest() {}
+
+  // When a HttpStream creation process is stalled due to necessity
+  // of Proxy authentication credentials, the delegate OnNeedsProxyAuth
+  // will have been called.  It now becomes the delegate's responsibility
+  // to collect the necessary credentials, and then call this method to
+  // resume the HttpStream creation process.
+  virtual int RestartTunnelWithProxyAuth(
+      const AuthCredentials& credentials) = 0;
+
+  // Called when the priority of the parent transaction changes.
+  virtual void SetPriority(RequestPriority priority) = 0;
+
+  // Returns the LoadState for the request.
+  virtual LoadState GetLoadState() const = 0;
+
+  // Returns true if TLS/NPN was negotiated for this stream.
+  virtual bool was_npn_negotiated() const = 0;
+
+  // Protocol negotiated with the server.
+  virtual NextProto protocol_negotiated() const = 0;
+
+  // Returns true if this stream is being fetched over SPDY.
+  virtual bool using_spdy() const = 0;
+};
+
+// The HttpStreamFactory defines an interface for creating usable HttpStreams.
+class NET_EXPORT HttpStreamFactory {
+ public:
+  virtual ~HttpStreamFactory();
+
+  void ProcessAlternateProtocol(
+      const base::WeakPtr<HttpServerProperties>& http_server_properties,
+      const std::string& alternate_protocol_str,
+      const HostPortPair& http_host_port_pair,
+      const HttpNetworkSession& session);
+
+  GURL ApplyHostMappingRules(const GURL& url, HostPortPair* endpoint);
+
+  // Virtual interface methods.
+
+  // Request a stream.
+  // Will call delegate->OnStreamReady on successful completion.
+  virtual HttpStreamRequest* RequestStream(
+      const HttpRequestInfo& info,
+      RequestPriority priority,
+      const SSLConfig& server_ssl_config,
+      const SSLConfig& proxy_ssl_config,
+      HttpStreamRequest::Delegate* delegate,
+      const BoundNetLog& net_log) = 0;
+
+  // Request a WebSocket handshake stream.
+  // Will call delegate->OnWebSocketHandshakeStreamReady on successful
+  // completion.
+  virtual HttpStreamRequest* RequestWebSocketHandshakeStream(
+      const HttpRequestInfo& info,
+      RequestPriority priority,
+      const SSLConfig& server_ssl_config,
+      const SSLConfig& proxy_ssl_config,
+      HttpStreamRequest::Delegate* delegate,
+      WebSocketHandshakeStreamBase::CreateHelper* create_helper,
+      const BoundNetLog& net_log) = 0;
+
+  // Requests that enough connections for |num_streams| be opened.
+  virtual void PreconnectStreams(int num_streams,
+                                 const HttpRequestInfo& info,
+                                 RequestPriority priority,
+                                 const SSLConfig& server_ssl_config,
+                                 const SSLConfig& proxy_ssl_config) = 0;
+
+  virtual const HostMappingRules* GetHostMappingRules() const = 0;
+
+  // Static settings
+
+  // Reset all static settings to initialized values. Used to init test suite.
+  static void ResetStaticSettingsToInit();
+
+  // Turns spdy on or off.
+  // TODO(mmenke):  Figure out if this can be made a property of the
+  //                HttpNetworkSession.
+  static void set_spdy_enabled(bool value) {
+    spdy_enabled_ = value;
+  }
+  static bool spdy_enabled() { return spdy_enabled_; }
+
+ protected:
+  HttpStreamFactory();
+
+ private:
+  static bool spdy_enabled_;
+
+  DISALLOW_COPY_AND_ASSIGN(HttpStreamFactory);
+};
+
+}  // namespace net
+
+#endif  // NET_HTTP_HTTP_STREAM_FACTORY_H_