Avoid defining snprintf when MSVC provides it

src/pdf/SkPDFTypes.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "SkPDFTypes.h"
 #include "SkStream.h"
 
-#ifdef SK_BUILD_FOR_WIN
+#if defined(_MSC_VER) && _MSC_VER < 1900
     #define SNPRINTF    _snprintf
 #else
     #define SNPRINTF    snprintf
 #endif
 
 ////////////////////////////////////////////////////////////////////////////////
 
 SkPDFObjRef::SkPDFObjRef(SkPDFObject* obj) : fObj(obj) {
     SkSafeRef(obj);
 }
@@ skipping 420 matching lines @@
     fObjects.push(obj);
     return true;
 }
 
 int32_t SkPDFObjNumMap::getObjectNumber(SkPDFObject* obj) const {
     int32_t* objectNumberFound = fObjectNumbers.find(obj);
     SkASSERT(objectNumberFound);
     return *objectNumberFound;
 }