Don't #define snprintf in VS 2015 builds.

content/content_shell.gypi

 # 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.
 
 {
   'variables': {
     'content_shell_product_name': 'Content Shell',
     # The "19" is so that sites that sniff for version think that this is
     # something reasonably current; the "77.34.5" is a hint that this isn't a
     # standard Chrome.
@@ skipping 725 matching lines @@
         }],
         ['os_posix == 1 and OS != "mac"', {
           'cflags': [
             '-fvisibility=default',
           ],
         }],
         ['use_x11 == 1', {
           'dependencies': [ '../build/linux/system.gyp:x11' ],
         }],
         ['OS=="win"', {
-          'defines': [
-            # This seems like a hack, but this is what Safari Win does.
-            'snprintf=_snprintf',
+          'conditions': [
+            ['MSVS_VERSION < "2015"', {
+              'defines': [
+                # This seems like a hack, but this is what Safari Win does.
+                # Luckily it is no longer needed/allowed with VS 2015.
+                'snprintf=_snprintf',
+              ],
+            }],
           ],
           'sources': [
             'shell/tools/plugin/win/TestNetscapePlugin.def',
             'shell/tools/plugin/win/TestNetscapePlugin.rc',
           ],
           # The .rc file requires that the name of the dll is np_test_netscape_plugin.dll.
           'product_name': 'np_test_netscape_plugin',
           # Disable c4267 warnings until we fix size_t to int truncations.
           'msvs_disabled_warnings': [ 4267, ],
         }],
@@ skipping 400 matching lines @@
                 '--input_symbol', '<(PRODUCT_DIR)/content_shell.exe.pdb',
                 '--destination_dir', '<(dest_dir)',
               ],
             },
           ],
         },
       ],
     }],  # OS=="win" and fastbuild==0 and target_arch=="ia32"
   ]
 }