Switching in new gyp version (which changes 'none' back to how it was before)...

third_party/tcmalloc/tcmalloc.gyp

 # Copyright (c) 2009 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.
 
 {
   'includes': [
     '../../build/common.gypi',
   ],
   'targets': [
     {
@@ skipping 57 matching lines @@
           'msvs_settings': {
             'VCCLCompilerTool': {
               'RuntimeLibrary': '0',
             },
           },
         },
       },
     },
     {
       'target_name': 'libcmt',
-      'conditions': [
-        ['OS=="win"', {
-          'type': 'utility',
-        },{
-          'type': 'none',
-        }],
-      ],
+      'type': 'none',
       'actions': [
         {
           'action_name': 'libcmt',
           'inputs': [
             'prep_libc.sh',
           ],
           'outputs': [
             '<(SHARED_INTERMEDIATE_DIR)/tcmalloc/libcmt.lib',
           ],
           'action': [
             './prep_libc.sh',
             '$(VCInstallDir)lib',
             '<(SHARED_INTERMEDIATE_DIR)/tcmalloc',
           ],
         },
       ],
     },
   ],
 }