Make plugins work in content_shell.

content/content_shell.gypi

 # Copyright (c) 2011 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.
 
 {
   'targets': [
     {
       'target_name': 'content_shell',
       'type': 'executable',
       'variables': {
         'chromium_code': 1,
       },
       'dependencies': [
         'content_app',
         'content_browser',
         'content_common',
         'content_gpu',
         'content_plugin',
         'content_ppapi_plugin',
         'content_renderer',
         'content_utility',
         'content_worker',
         '../skia/skia.gyp:skia',
         '../ui/ui.gyp:ui',
+        '../v8/tools/gyp/v8.gyp:v8',
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
         'browser/download/mock_download_manager_delegate.cc',
         'browser/tab_contents/tab_contents_view_win.cc',
         'browser/tab_contents/tab_contents_view_win.h',
         'shell/shell.cc',
         'shell/shell.h',
@@ skipping 56 matching lines @@
                   'LinkIncremental': '<(msvs_large_module_debug_link_mode)',
                 },
               },
             },
           },
         }],
       ],
     },
   ],
 }