Broker out PPAPI handle duplication

content/content_common.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.
 
 {
   'dependencies': [
     '../base/base.gyp:base',
     '../build/temp_gyp/googleurl.gyp:googleurl',
     '../gpu/gpu.gyp:gles2_implementation',
     '../gpu/gpu.gyp:gpu_ipc',
@@ skipping 53 matching lines @@
     'public/common/page_zoom.h',
     'public/common/pepper_plugin_info.cc',
     'public/common/pepper_plugin_info.h',
     'public/common/process_type.h',
     'public/common/referrer.h',
     'public/common/renderer_preferences.cc',
     'public/common/renderer_preferences.h',
     'public/common/resource_dispatcher_delegate.h',
     'public/common/resource_response.h',
     'public/common/result_codes.h',
+    'public/common/sandbox_init.cc',
     'public/common/sandbox_init.h',
     'public/common/sandbox_linux.h',
     'public/common/sandbox_type_mac.h',
     'public/common/security_style.h',
     'public/common/selected_file_info.h',
     'public/common/serialized_script_value.cc',
     'public/common/serialized_script_value.h',
     'public/common/show_desktop_notification_params.cc',
     'public/common/show_desktop_notification_params.h',
     'public/common/speech_recognition_error.h',
@@ skipping 359 matching lines @@
         '../build/extract_from_cab.py',
         '..\\third_party\\directxsdk\\files\\Redist\\<(input)',
         '<(output)',
         '<(PRODUCT_DIR)',
         ],
       },
      ]
     }]
   ],
 }