[SPDY] Remove references to obsolete SPDY versions SPDY/1 and SPDY/2.1

net/spdy/spdy_session.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_SPDY_SPDY_SESSION_H_
 #define NET_SPDY_SPDY_SESSION_H_
 
 #include <deque>
 #include <map>
 #include <set>
@@ skipping 244 matching lines @@
   //
   // Returns OK on success, or an error on failure. Never returns
   // ERR_IO_PENDING. If an error is returned, the session must be
   // destroyed immediately.
   Error InitializeWithSocket(scoped_ptr<ClientSocketHandle> connection,
                              SpdySessionPool* pool,
                              bool is_secure,
                              int certificate_error_code);
 
   // Returns the protocol used by this session. Always between
-  // kProtoSPDY2 and kProtoSPDYMaximumVersion.
-  //
-  // TODO(akalin): Change the lower bound to kProtoSPDYMinimumVersion
-  // once we stop supporting SPDY/1.
+  // kProtoSPDYMinimumVersion and kProtoSPDYMaximumVersion.
   NextProto protocol() const { return protocol_; }
 
   // Check to see if this SPDY session can support an additional domain.
   // If the session is un-authenticated, then this call always returns true.
   // For SSL-based sessions, verifies that the server certificate in use by
   // this session provides authentication for the domain and no client
   // certificate or channel ID was sent to the original server during the SSL
   // handshake.  NOTE:  This function can have false negatives on some
   // platforms.
   // TODO(wtc): rename this function and the Net.SpdyIPPoolDomainMatch
@@ skipping 814 matching lines @@
 
   BoundNetLog net_log_;
 
   // Outside of tests, these should always be true.
   bool verify_domain_authentication_;
   bool enable_sending_initial_data_;
   bool enable_credential_frames_;
   bool enable_compression_;
   bool enable_ping_based_connection_checking_;
 
-  // The SPDY protocol used. Always between kProtoSPDY2 and
+  // The SPDY protocol used. Always between kProtoSPDYMinimumVersion and
   // kProtoSPDYMaximumVersion.
-  //
-  // TODO(akalin): Change the lower bound to kProtoSPDYMinimumVersion
-  // once we stop supporting SPDY/1.
   NextProto protocol_;
 
   SpdyCredentialState credential_state_;
 
   // |connection_at_risk_of_loss_time_| is an optimization to avoid sending
   // wasteful preface pings (when we just got some data).
   //
   // If it is zero (the most conservative figure), then we always send the
   // preface ping (when none are in flight).
   //
@@ skipping 16 matching lines @@
   // This SPDY proxy is allowed to push resources from origins that are
   // different from those of their associated streams.
   HostPortPair trusted_spdy_proxy_;
 
   TimeFunc time_func_;
 };
 
 }  // namespace net
 
 #endif  // NET_SPDY_SPDY_SESSION_H_