Standardize "net" category trace events

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 <utility>
 
 #include "base/logging.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/profiler/scoped_tracker.h"
 #include "base/stl_util.h"
 #include "base/trace_event/trace_event.h"
 #include "base/values.h"
 #include "net/base/address_list.h"
+#include "net/base/trace_constants.h"
 #include "net/http/http_network_session.h"
 #include "net/http/http_server_properties.h"
 #include "net/log/net_log_event_type.h"
 #include "net/log/net_log_source.h"
 #include "net/log/net_log_with_source.h"
 #include "net/spdy/spdy_session.h"
 
 namespace net {
 
 namespace {
@@ skipping 48 matching lines @@
     ssl_config_service_->RemoveObserver(this);
   NetworkChangeNotifier::RemoveIPAddressObserver(this);
   CertDatabase::GetInstance()->RemoveObserver(this);
 }
 
 base::WeakPtr<SpdySession> SpdySessionPool::CreateAvailableSessionFromSocket(
     const SpdySessionKey& key,
     std::unique_ptr<ClientSocketHandle> connection,
     const NetLogWithSource& net_log,
     bool is_secure) {
-  TRACE_EVENT0("net", "SpdySessionPool::CreateAvailableSessionFromSocket");
+  TRACE_EVENT0(kNetTracingCategory,
+               "SpdySessionPool::CreateAvailableSessionFromSocket");
 
   UMA_HISTOGRAM_ENUMERATION(
       "Net.SpdySessionGet", IMPORTED_FROM_SOCKET, SPDY_SESSION_GET_MAX);
 
   std::unique_ptr<SpdySession> new_session(new SpdySession(
       key, http_server_properties_, transport_security_state_,
       enable_sending_initial_data_, enable_ping_based_connection_checking_,
       session_max_recv_window_size_, stream_max_recv_window_size_, time_func_,
       proxy_delegate_, net_log.net_log()));
 
@@ skipping 332 matching lines @@
 
     if (idle_only && (*it)->is_active())
       continue;
 
     (*it)->CloseSessionOnError(error, description);
     DCHECK(!IsSessionAvailable(*it));
   }
 }
 
 }  // namespace net