Remove unused lambda capture to unbreak downstream code.

webrtc/p2p/base/p2ptransportchannel.cc

 /*
  *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 1673 matching lines @@
     pinged_connections_.clear();
   }
 
   // Among un-pinged pingable connections, "more pingable" takes precedence.
   std::vector<Connection*> pingable_connections;
   std::copy_if(unpinged_connections_.begin(), unpinged_connections_.end(),
                std::back_inserter(pingable_connections),
                [this, now](Connection* conn) { return IsPingable(conn, now); });
   auto iter =
       std::max_element(pingable_connections.begin(), pingable_connections.end(),
-                       [this, now](Connection* conn1, Connection* conn2) {
+                       [this](Connection* conn1, Connection* conn2) {
                          return MorePingable(conn1, conn2) == conn2;
                        });
   if (iter != pingable_connections.end()) {
     return *iter;
   }
   return nullptr;
 }
 
 void P2PTransportChannel::MarkConnectionPinged(Connection* conn) {
   if (conn && pinged_connections_.insert(conn).second) {
@@ skipping 330 matching lines @@
 
 void P2PTransportChannel::set_receiving(bool receiving) {
   if (receiving_ == receiving) {
     return;
   }
   receiving_ = receiving;
   SignalReceivingState(this);
 }
 
 }  // namespace cricket