Move the TestSink for doing IPC tests from chrome/common into IPC and create ...

ipc/ipc.gyp

 # Copyright (c) 2009 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'target_defaults': {
     'sources/': [
@@ skipping 56 matching lines @@
           'conditions': [
             ['linux_use_tcmalloc==1', {
               'dependencies': [
                 '../base/allocator/allocator.gyp:allocator',
               ],
             }],
           ],
         }]
       ],
     },
+    {
+      'target_name': 'test_support_ipc',
+      'type': '<(library)',
+      'dependencies': [
+        'ipc',
+        '../base/base.gyp:base',
+      ],
+      'sources': [
+        'ipc_test_sink.cc',
+        'ipc_test_sink.h',
+      ],
+    },
   ],
 }
 
 # Local Variables:
 # tab-width:2
 # indent-tabs-mode:nil
 # End:
 # vim: set expandtab tabstop=2 shiftwidth=2: