Introduce RegistrationServer.

handler/handler.gyp

 # Copyright 2014 The Crashpad Authors. All rights reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 50 matching lines @@
                 'LD_RUNPATH_SEARCH_PATHS': [  # -Wl,-rpath
                   # Get back from
                   # Chromium.app/Contents/Versions/V/Framework.framework/Helpers
                   '@loader_path/../../../../../..',
                 ],
               },
             }],
           ],
         },
       ],
+    },],
+    ['OS=="win"', {
+      'targets': [
+        {
+          'target_name': 'crashpad_handler',
+          'type': 'static_library',
+          'dependencies': [
+             '../client/client.gyp:crashpad_client',
+             '../third_party/mini_chromium/mini_chromium.gyp:base',
+             '../util/util.gyp:crashpad_util',
+          ],
+          'include_dirs': [
+            '..',
+          ],
+          'sources': [
+            'win/registration_pipe_state.cc',
+            'win/registration_pipe_state.h',
+            'win/registration_server.cc',
+            'win/registration_server.h',
+          ],
+        },
+      ],
     }, {
       'targets': [],
     }],
   ],
 }