Enable use_allocator instead of linux_use_tcmalloc in Blink.

Source/web/web_tests.gyp

 #
 # Copyright (C) 2011 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 151 matching lines @@
                     'dependencies': [
                         '<(DEPTH)/testing/android/native_test.gyp:native_test_native_code',
                         '<(DEPTH)/tools/android/forwarder2/forwarder.gyp:forwarder2',
                     ],
                 }],
                 ['OS=="mac"', {
                     'include_dirs': [
                         '../../public/web/mac',
                     ],
                 }],
-                [ '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/allocator/allocator.gyp:allocator',
                     ],
                 }],
             ],
         }
     ], # targets
     'conditions': [
         ['gcc_version>=46', {
             'target_defaults': {
@@ skipping 14 matching lines @@
                 ],
                 'variables': {
                     'test_suite_name': 'webkit_unit_tests',
                     'input_shlib_path': '<(SHARED_LIB_DIR)/<(SHARED_LIB_PREFIX)webkit_unit_tests<(SHARED_LIB_SUFFIX)',
                 },
                 'includes': [ '../../../../build/apk_test.gypi' ],
             }],
         }],
     ],
 }