Enable use_allocator instead of linux_use_tcmalloc in Blink.

Source/platform/blink_platform_tests.gyp

 #
 # Copyright (C) 2013 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 37 matching lines @@
     'defines': [
       'INSIDE_BLINK',
     ],
     'include_dirs': [
       '<(SHARED_INTERMEDIATE_DIR)/blink',
     ],
     'sources': [
       '<@(platform_test_files)',
     ],
     'conditions': [
-      ['os_posix==1 and OS!="mac" and OS!="android" and OS!="ios" and linux_use_tcmalloc==1', {
+      # TODO(dmikurube): Kill linux_use_tcmalloc. http://crbug.com/345554
+      ['os_posix==1 and OS!="mac" and OS!="android" and OS!="ios" and ((use_allocator!="none" and use_allocator!="see_use_tcmalloc") or (use_allocator=="see_use_tcmalloc" and linux_use_tcmalloc==1))', {
         'dependencies': [
           '<(DEPTH)/base/base.gyp:base',
           '<(DEPTH)/base/allocator/allocator.gyp:allocator',
         ]
       }],
       ['OS=="android" and gtest_target_type == "shared_library"', {
         'type': 'shared_library',
         'dependencies': [
           '<(DEPTH)/testing/android/native_test.gyp:native_test_native_code',
           '<(DEPTH)/tools/android/forwarder2/forwarder.gyp:forwarder2',
@@ skipping 12 matching lines @@
           'blink_platform_unittests',
         ],
         'variables': {
           'test_suite_name': 'blink_platform_unittests',
         },
         'includes': [ '../../../../build/apk_test.gypi' ],
       }],
     }],
   ],
 }