linux: TCMalloc-based C++ heap profiler.

base/base.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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 358 matching lines @@
       },
       # These warnings are needed for the files in third_party\dmg_fp.
       'msvs_disabled_warnings': [
         4244, 4554, 4018, 4102,
       ],
       'mac_framework_dirs': [
         '$(SDKROOT)/System/Library/Frameworks/ApplicationServices.framework/Frameworks',
       ],
       'conditions': [
         [ 'OS == "linux" or OS == "freebsd"', {
-            'variables' : {
-              'linux_use_tcmalloc%': 0,
-            },
             'sources/': [ ['exclude', '_(mac|win|chromeos)\\.cc$'],
                           ['exclude', '\\.mm?$' ] ],
             'conditions': [
               [ 'chromeos==1 or toolkit_views==1', {
                   'sources/': [ ['include', '_chromeos\\.cc$'] ]
                 },
               ],
               [ 'linux_use_tcmalloc==1', {
                   'dependencies': [
                     '../third_party/tcmalloc/tcmalloc.gyp:tcmalloc',
@@ skipping 448 matching lines @@
       ],
     }],
   ],
 }
 
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