Implement web app definition parsing.

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 110 matching lines @@
           'common/sandbox_policy.cc',
           'common/sandbox_policy.h',
           'common/serialized_script_value.cc',
           'common/serialized_script_value.h',
           'common/switch_utils.cc',
           'common/switch_utils.h',
           'common/time_format.cc',
           'common/time_format.h',
           'common/chrome_version_info.h',
           'common/chrome_version_info.cc',
+          'common/web_apps.h',
+          'common/web_apps.cc',
           'common/webblobregistry_impl.cc',
           'common/webblobregistry_impl.h',
           'common/win_safe_util.cc',
           'common/win_safe_util.h',
         ],
       }],
     ],
   },
   'targets': [
     {
@@ skipping 429 matching lines @@
           'configurations': {
             'Common_Base': {
               'msvs_target_platform': 'x64',
             },
           },
         },
       ],
     }],
   ],
 }