Fix Visual Studio 2015 WebRtc x86 build.

webrtc/base/logging.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.
  */
 
 #if defined(WEBRTC_WIN)
 #if !defined(WIN32_LEAN_AND_MEAN)
 #define WIN32_LEAN_AND_MEAN
 #endif
 #include <windows.h>
+#if _MSC_VER < 1900
 #define snprintf _snprintf
+#endif
 #undef ERROR  // wingdi.h
 #endif
 
 #if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS)
 #include <CoreServices/CoreServices.h>
 #elif defined(WEBRTC_ANDROID)
 #include <android/log.h>
 // Android has a 1024 limit on log inputs. We use 60 chars as an
 // approx for the header/tag portion.
 // See android/system/core/liblog/logd_write.c
@@ skipping 520 matching lines @@
   }
 
   if (state) {
     state->unprintable_count_[input] = consecutive_unprintable;
   }
 }
 
 //////////////////////////////////////////////////////////////////////
 
 }  // namespace rtc