Adds IDBKeyPath parser / extractor, and provides a mechanism to call it sandboxed.

chrome/chrome_common.gypi

 # Copyright (c) 2010 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.
 
 {
   'target_defaults': {
     'variables': {
       'chrome_common_target': 0,
     },
     'target_conditions': [
@@ skipping 47 matching lines @@
           'common/geoposition.h',
           'common/gpu_info.h',
           'common/gpu_info.cc',
           'common/gpu_messages.cc',
           'common/gpu_messages.h',
           'common/gpu_messages_internal.h',
           'common/gpu_video_common.cc',
           'common/gpu_video_common.h',
           'common/indexed_db_key.cc',
           'common/indexed_db_key.h',
+          'common/indexed_param_traits.h',
           'common/logging_chrome.cc',
           'common/logging_chrome.h',
           'common/main_function_params.h',
           'common/message_router.cc',
           'common/message_router.h',
           'common/metrics_helpers.cc',
           'common/metrics_helpers.h',
           'common/nacl_cmd_line.cc',
           'common/nacl_cmd_line.h',
           'common/nacl_messages.cc',
@@ skipping 362 matching lines @@
           'configurations': {
             'Common_Base': {
               'msvs_target_platform': 'x64',
             },
           },
         },
       ],
     }],
   ],
 }