Remove {linux|android}_use_tcmalloc and switch to use_allocator in Chromium.

ipc/ipc.gyp

 # Copyright (c) 2012 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,
   },
   'includes': [
     'ipc.gypi',
@@ skipping 56 matching lines @@
             'unix_domain_socket_util_unittest.cc',
           ],
         }],
         ['OS == "android" and gtest_target_type == "shared_library"', {
           'dependencies': [
             '../testing/android/native_test.gyp:native_test_native_code',
           ],
         }],
         ['os_posix == 1 and OS != "mac" and OS != "android"', {
           'conditions': [
-            # TODO(dmikurube): Kill linux_use_tcmalloc. http://crbug.com/345554
-            ['(use_allocator!="none" and use_allocator!="see_use_tcmalloc") or (use_allocator=="see_use_tcmalloc" and linux_use_tcmalloc==1)', {
+            ['use_allocator!="none"', {
               'dependencies': [
                 '../base/allocator/allocator.gyp:allocator',
               ],
             }],
           ],
         }]
       ],
     },
     {
       'target_name': 'ipc_perftests',
@@ skipping 17 matching lines @@
         'ipc_test_base.h',
       ],
       'conditions': [
         ['OS == "android" and gtest_target_type == "shared_library"', {
           'dependencies': [
             '../testing/android/native_test.gyp:native_test_native_code',
           ],
         }],
         ['os_posix == 1 and OS != "mac" and OS != "android"', {
           'conditions': [
-            # TODO(dmikurube): Kill linux_use_tcmalloc. http://crbug.com/345554
-            ['(use_allocator!="none" and use_allocator!="see_use_tcmalloc") or (use_allocator=="see_use_tcmalloc" and linux_use_tcmalloc==1)', {
+            ['use_allocator!="none"', {
               'dependencies': [
                 '../base/allocator/allocator.gyp:allocator',
               ],
             }],
           ],
         }]
       ],
     },
     {
       'target_name': 'test_support_ipc',
@@ skipping 64 matching lines @@
             'ipc_perftests',
           ],
           'variables': {
             'test_suite_name': 'ipc_perftests',
           },
           'includes': [ '../build/apk_test.gypi' ],
         }],
     }],
   ],
 }