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

net/spdy/spdy_session_pool.cc

 // 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.
 
 #include "net/spdy/spdy_session_pool.h"
 
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/values.h"
 #include "net/base/address_list.h"
@@ skipping 47 matching lines @@
       // kProtoSPDY3.
       default_protocol_(
           (default_protocol == kProtoUnknown) ?
           kProtoSPDY2 : default_protocol),
       stream_initial_recv_window_size_(stream_initial_recv_window_size),
       initial_max_concurrent_streams_(initial_max_concurrent_streams),
       max_concurrent_streams_limit_(max_concurrent_streams_limit),
       time_func_(time_func),
       trusted_spdy_proxy_(
           HostPortPair::FromString(trusted_spdy_proxy)) {
-  // TODO(akalin): Change this to kProtoSPDYMinimumVersion once we
-  // stop supporting SPDY/1.
-  DCHECK(default_protocol_ >= kProtoSPDY2 &&
+  DCHECK(default_protocol_ >= kProtoSPDYMinimumVersion &&
          default_protocol_ <= kProtoSPDYMaximumVersion);
   NetworkChangeNotifier::AddIPAddressObserver(this);
   if (ssl_config_service_.get())
     ssl_config_service_->AddObserver(this);
   CertDatabase::GetInstance()->AddObserver(this);
 }
 
 SpdySessionPool::~SpdySessionPool() {
   CloseAllSessions();
 
   if (ssl_config_service_.get())
     ssl_config_service_->RemoveObserver(this);
   NetworkChangeNotifier::RemoveIPAddressObserver(this);
   CertDatabase::GetInstance()->RemoveObserver(this);
 }
 
 net::Error SpdySessionPool::CreateAvailableSessionFromSocket(
     const SpdySessionKey& key,
     scoped_ptr<ClientSocketHandle> connection,
     const BoundNetLog& net_log,
     int certificate_error_code,
     base::WeakPtr<SpdySession>* available_session,
     bool is_secure) {
-  // TODO(akalin): Change this to kProtoSPDYMinimumVersion once we
-  // stop supporting SPDY/1.
-  DCHECK_GE(default_protocol_, kProtoSPDY2);
+  DCHECK_GE(default_protocol_, kProtoSPDYMinimumVersion);
   DCHECK_LE(default_protocol_, kProtoSPDYMaximumVersion);
 
   UMA_HISTOGRAM_ENUMERATION(
       "Net.SpdySessionGet", IMPORTED_FROM_SOCKET, SPDY_SESSION_GET_MAX);
 
   scoped_ptr<SpdySession> new_session(
       new SpdySession(key,
                       http_server_properties_,
                       verify_domain_authentication_,
                       enable_sending_initial_data_,
@@ skipping 283 matching lines @@
     if (idle_only && (*it)->is_active())
       continue;
 
     (*it)->CloseSessionOnError(error, description);
     DCHECK(!IsSessionAvailable(*it));
     DCHECK(!*it);
   }
 }
 
 }  // namespace net