Taking advantage of new configuration inheritance option....

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.
 
 {
   'targets': [
     {
       'target_name': 'tcmalloc',
       'type': '<(library)',
       'msvs_guid': 'C564F145-9172-42C3-BFCB-60FDEA124321',
       'include_dirs': [
         '.',
         'tcmalloc/src/base',
         'tcmalloc/src',
         '../..',
       ],
       'direct_dependent_settings': {
         'configurations': {
-          # TODO(bradnelson): find a way to make this more graceful in gyp.
-          #    Ideally configurations should be able to have some sort of
-          #    inheritance hierarchy. So that Purify no-tcmalloc could be
-          #    be derived from Release.
-          'Debug': {
+          'Common': {
             'msvs_settings': {
               'VCLinkerTool': {
                 'IgnoreDefaultLibraryNames': ['libcmtd.lib', 'libcmt.lib'],
                 'AdditionalDependencies': [
                   '<(SHARED_INTERMEDIATE_DIR)/tcmalloc/libcmt.lib'
                 ],
               },
             },
           },
-          'Release': {
-            'msvs_settings': {
-              'VCLinkerTool': {
-                'IgnoreDefaultLibraryNames': ['libcmtd.lib', 'libcmt.lib'],
-                'AdditionalDependencies': [
-                  '<(SHARED_INTERMEDIATE_DIR)/tcmalloc/libcmt.lib'
-                ],
-              },
-            },
-          },
         },
         'conditions': [
           ['OS=="win"', {
             'defines': [
               ['PERFTOOLS_DLL_DECL', '']
             ],
           }],
         ],
       },
       'sources': [
@@ skipping 238 matching lines @@
       ],
     }],
   ],
 }
 
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