Changing v8_shell to v8_shell_sample to match what the buildbot expects.

build/temp_gyp/v8.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.
 
 # TODO(mark): Upstream this file to v8.
 {
   'variables': {
     'chromium_code': 1,
     'base_source_files': [
       '../../v8/src/third_party/dtoa/dtoa.c',
@@ skipping 422 matching lines @@
       'direct_dependent_settings': {
         'include_dirs': [
           '../../v8/include',
         ],
       },
       'export_dependent_settings': [
         'v8_base',
       ],
     },
     {
-      'target_name': 'v8_shell',
+      'target_name': 'v8_shell_sample',
       'type': 'executable',
       'dependencies': [
         'v8',
       ],
       'sources': [
         '../../v8/samples/shell.cc',
       ],
       'conditions': [
         [ 'OS=="win"', {
           # This could be gotten by not setting chromium_code, if that's OK.
@@ skipping 148 matching lines @@
           ]},
         }],
         [ 'OS=="win"', {
           'sources!': [ '../../v8/src/d8-readline.cc', '../../v8/src/d8-posix.cc' ],
         }],
       ],
     },
   ]}], # OS != "linux" (temporary, TODO(sgk))
   ],
 }