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

content/content_shell.gypi

 # 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': {
     'content_shell_product_name': 'Content Shell',
     # The "19" is so that sites that sniff for version think that this is
     # something reasonably current; the "77.34.5" is a hint that this isn't a
     # standard Chrome.
@@ skipping 283 matching lines @@
           ],
           'dependencies!': [
             'copy_test_netscape_plugin',
           ],
         }],  # OS=="android"
         ['os_posix == 1 and OS != "mac" and android_webview_build != 1', {
           'dependencies': [
             '../components/components.gyp:breakpad_host',
           ],
         }],
-        # TODO(dmikurube): Kill {linux|android}_use_tcmalloc. http://crbug.com/345554
-        ['(use_allocator!="none" and use_allocator!="see_use_tcmalloc") or (use_allocator=="see_use_tcmalloc" and ((OS=="linux" and linux_use_tcmalloc==1) or (OS=="android" and android_use_tcmalloc==1)))', {
+        ['(OS=="linux" or OS=="android") and use_allocator!="none"', {
           'dependencies': [
             # This is needed by content/app/content_main_runner.cc
             '../base/allocator/allocator.gyp:allocator',
           ],
         }],
         ['use_aura==1', {
           'dependencies': [
             '../ui/aura/aura.gyp:aura',
             '../ui/aura/aura.gyp:aura_test_support',
             '../ui/base/strings/ui_strings.gyp:ui_strings',
@@ skipping 785 matching lines @@
                 '--input_symbol', '<(PRODUCT_DIR)/content_shell.exe.pdb',
                 '--destination_dir', '<(dest_dir)',
               ],
             },
           ],
         },
       ],
     }],  # OS=="win" and fastbuild==0 and target_arch=="ia32"
   ]
 }