Fix windows build break

webrtc/p2p/stunprober/stunprober.h

 /*
  *  Copyright 2015 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 256 matching lines @@
 
  private:
   void OnServerResolved(int index, int result);
 
   bool Done() {
     return num_request_sent_ >= requests_per_ip_ * all_servers_ips_.size();
   }
 
   int GetTotalClientSockets() { return 1; }
   int GetTotalServerSockets() {
-    return (shared_socket_mode_ ? 1 : all_servers_ips_.size()) *
-           requests_per_ip_;
+    return static_cast<int>(
+        (shared_socket_mode_ ? 1 : all_servers_ips_.size()) * requests_per_ip_);
   }
 
   bool SendNextRequest();
 
   // Will be invoked in 1ms intervals and schedule the next request from the
   // |current_requester_| if the time has passed for another request.
   void MaybeScheduleStunRequests();
 
   // End the probe with the given |status|.  Invokes |fininsh_callback|, which
   // may destroy the class.
@@ skipping 52 matching lines @@
   std::vector<Requester*> requesters_;
 
   rtc::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(StunProber);
 };
 
 }  // namespace stunprober
 
 #endif  // WEBRTC_P2P_STUNPROBER_STUNPROBER_H_