Add a GetAlternativeService method to HttpStream to return any

net/http/http_stream.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.
 //
 // HttpStream provides an abstraction for a basic http streams, SPDY, and QUIC.
 // The HttpStream subtype is expected to manage the underlying transport
 // appropriately.  For example, a basic http stream will return the transport
 // socket to the pool for reuse.  SPDY streams on the other hand leave the
 // transport socket management to the SpdySession.
 
@@ skipping 12 matching lines @@
 #include "net/base/net_export.h"
 #include "net/base/request_priority.h"
 #include "net/ssl/token_binding.h"
 
 namespace crypto {
 class ECPrivateKey;
 }
 
 namespace net {
 
+struct AlternativeService;
 class HttpNetworkSession;
 class HttpRequestHeaders;
 struct HttpRequestInfo;
 class HttpResponseInfo;
 class IOBuffer;
 class IPEndPoint;
 struct LoadTimingInfo;
 class NetLogWithSource;
 class SSLCertRequestInfo;
 class SSLInfo;
@@ skipping 100 matching lines @@
   // In practice, this means that this function will always succeed any time
   // between when the full headers have been received and the stream has been
   // closed.
   virtual bool GetLoadTimingInfo(LoadTimingInfo* load_timing_info) const = 0;
 
   // Get the SSLInfo associated with this stream's connection.  This should
   // only be called for streams over SSL sockets, otherwise the behavior is
   // undefined.
   virtual void GetSSLInfo(SSLInfo* ssl_info) = 0;
 
+  // Returns true and populates |alternative_service| if an alternative service
+  // was used to for this stream. Otherwise returns false.
+  virtual bool GetAlternativeService(
+      AlternativeService* alternative_service) const = 0;
+
   // Get the SSLCertRequestInfo associated with this stream's connection.
   // This should only be called for streams over SSL sockets, otherwise the
   // behavior is undefined.
   virtual void GetSSLCertRequestInfo(SSLCertRequestInfo* cert_request_info) = 0;
 
   // Gets the remote endpoint of the socket that the HTTP stream is using, if
   // any. Returns true and fills in |endpoint| if it is available; returns false
   // and does not modify |endpoint| if it is unavailable.
   virtual bool GetRemoteEndpoint(IPEndPoint* endpoint) = 0;
 
@@ skipping 25 matching lines @@
   // subclass does not support renewing the stream, NULL is returned.
   virtual HttpStream* RenewStreamForAuth() = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(HttpStream);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_STREAM_H_