[mojo-edk] Add MojoWatch and MojoCancelWatch APIs

mojo/mojo_edk_tests.gyp

 # Copyright 2015 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.
 
 {
   'includes': [
     'mojo_variables.gypi',
   ],
   'targets': [
     {
@@ skipping 209 matching lines @@
         'edk/system/options_validation_unittest.cc',
         'edk/system/platform_handle_dispatcher_unittest.cc',
         'edk/system/shared_buffer_dispatcher_unittest.cc',
         'edk/system/shared_buffer_unittest.cc',
         'edk/system/test_utils.cc',
         'edk/system/test_utils.h',
         'edk/system/wait_set_dispatcher_unittest.cc',
         'edk/system/waiter_test_utils.cc',
         'edk/system/waiter_test_utils.h',
         'edk/system/waiter_unittest.cc',
+        'edk/system/watch_unittest.cc',
       ],
       'conditions': [
         ['OS=="ios"', {
           'sources!': [
             'edk/system/multiprocess_message_pipe_unittest.cc',
           ],
         }],
       ],
     },
     {
@@ skipping 116 matching lines @@
             '../build/isolate.gypi',
           ],
           'sources': [
             'mojo_public_utility_unittests.isolate',
           ],
         },
       ],
     }],
   ],
 }