Mojo: Add a Mojo-specific multiprocess test base class.

mojo/mojo.gyp

 # Copyright 2013 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,
   },
   'includes': [
     'mojo_examples.gypi',
@@ skipping 22 matching lines @@
         'mojo_system_unittests',
         'sample_app',
       ],
     },
     {
       'target_name': 'mojo_run_all_unittests',
       'type': 'static_library',
       'dependencies': [
         '../base/base.gyp:base',
         '../base/base.gyp:test_support_base',
+        '../testing/gtest.gyp:gtest',
         'mojo_system',
       ],
       'sources': [
+        'common/test/multiprocess_test_base.cc',
+        'common/test/multiprocess_test_base.h',
         'common/test/run_all_unittests.cc',
       ],
     },
     {
       'target_name': 'mojo_run_all_perftests',
       'type': 'static_library',
       'dependencies': [
         '../base/base.gyp:test_support_base',
         'mojo_system',
       ],
@@ skipping 120 matching lines @@
         'mojo_bindings',
         'mojo_common_lib',
         'mojo_public_test_support',
         'mojo_run_all_unittests',
         'mojo_system',
       ],
       'sources': [
         'common/common_similarity_traits_unittest.cc',
         'common/handle_watcher_unittest.cc',
         'common/message_pump_mojo_unittest.cc',
+        'common/test/multiprocess_test_base_unittest.cc',
       ],
       'conditions': [
         ['OS == "win"', {
           # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
           'msvs_disabled_warnings': [
             4267,
           ],
         }],
       ],
     },
@@ skipping 157 matching lines @@
             'java_in_dir': '<(DEPTH)/mojo/shell/android/apk',
             'resource_dir': '<(DEPTH)/mojo/shell/android/apk/res',
             'native_lib_target': 'libmojo_shell',
           },
           'includes': [ '../build/java_apk.gypi' ],
         }
       ],
     }],
   ],
 }