Use nonblocking IO mode as default for WebRTC

content/browser/renderer_host/p2p/socket_host_udp.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 "content/browser/renderer_host/p2p/socket_host_udp.h"
 
 #include "base/bind.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
 #include "base/stl_util.h"
@@ skipping 80 matching lines @@
                                    int socket_id,
                                    P2PMessageThrottler* throttler)
     : P2PSocketHost(message_sender, socket_id, P2PSocketHost::UDP),
       send_pending_(false),
       last_dscp_(net::DSCP_CS0),
       throttler_(throttler),
       send_buffer_size_(0) {
   net::UDPServerSocket* socket = new net::UDPServerSocket(
       GetContentClient()->browser()->GetNetLog(), net::NetLog::Source());
 #if defined(OS_WIN)
-  // If configured for finch experiment, use nonblocking IO.
-  if (base::FieldTrialList::FindFullName("WebRTC-UDPSocketNonBlockingIO") ==
-      "Enabled") {
-    socket->UseNonBlockingIO();
-  }
+  socket->UseNonBlockingIO();
 #endif
   socket_.reset(socket);
 }
 
 P2PSocketHostUdp::~P2PSocketHostUdp() {
   if (state_ == STATE_OPEN) {
     DCHECK(socket_.get());
     socket_.reset();
   }
 }
@@ skipping 282 matching lines @@
     case P2P_SOCKET_OPT_DSCP:
       return (net::OK == socket_->SetDiffServCodePoint(
           static_cast<net::DiffServCodePoint>(value))) ? true : false;
     default:
       NOTREACHED();
       return false;
   }
 }
 
 }  // namespace content