Properly handle spdy3 responses.

net/socket/stream_socket.h

 // Copyright (c) 2011 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_SOCKET_STREAM_SOCKET_H_
 #define NET_SOCKET_STREAM_SOCKET_H_
 #pragma once
 
 #include "base/time.h"
 #include "net/base/net_log.h"
 #include "net/base/next_proto.h"
 #include "net/socket/socket.h"
 
 namespace net {
 
 class AddressList;
 class IPEndPoint;
 
 class NET_EXPORT_PRIVATE StreamSocket : public Socket {
  public:
   virtual ~StreamSocket() {}
 
+  // Next Protocol Negotiation (NPN), if successful, results in agreement on an
+  // application-level string that specifies the application level protocol to
+  // use over the TLS connection. NextProto enumerates the application level
+  // protocols that we recognise.
+  enum NextProto {
+    kProtoUnknown = 0,
+    kProtoHTTP11 = 1,
+    kProtoSPDY1 = 2,
+    kProtoSPDY2 = 3,
+    kProtoSPDY21 = 4,
+    kProtoSPDY3 = 5,
+  };
+
   // Called to establish a connection.  Returns OK if the connection could be
   // established synchronously.  Otherwise, ERR_IO_PENDING is returned and the
   // given callback will run asynchronously when the connection is established
   // or when an error occurs.  The result is some other error code if the
   // connection could not be established.
   //
   // The socket's Read and Write methods may not be called until Connect
   // succeeds.
   //
   // It is valid to call Connect on an already connected socket, in which case
@@ skipping 96 matching lines @@
     // identify the motivation.
     bool omnibox_speculation_;
     bool subresource_speculation_;
     DISALLOW_COPY_AND_ASSIGN(UseHistory);
   };
 };
 
 }  // namespace net
 
 #endif  // NET_SOCKET_STREAM_SOCKET_H_