[mojo-edk] Add MojoWatch and MojoCancelWatch APIs

mojo/mojo_edk.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',
   ],
   'target_defaults' : {
     'include_dirs': [
@@ skipping 94 matching lines @@
         'edk/system/ports/node.h',
         'edk/system/ports/node_delegate.h',
         'edk/system/ports/port.cc',
         'edk/system/ports/port.h',
         'edk/system/ports/port_ref.cc',
         'edk/system/ports/user_data.h',
         'edk/system/ports_message.cc',
         'edk/system/ports_message.h',
         'edk/system/remote_message_pipe_bootstrap.cc',
         'edk/system/remote_message_pipe_bootstrap.h',
+        'edk/system/request_context.cc',
+        'edk/system/request_context.h',
         'edk/system/shared_buffer_dispatcher.cc',
         'edk/system/shared_buffer_dispatcher.h',
         'edk/system/wait_set_dispatcher.cc',
         'edk/system/wait_set_dispatcher.h',
         'edk/system/waiter.cc',
         'edk/system/waiter.h',
+        'edk/system/watcher.cc',
+        'edk/system/watcher.h',
+        'edk/system/watcher_set.cc',
+        'edk/system/watcher_set.h',
         # Test-only code:
         # TODO(vtl): It's a little unfortunate that these end up in the same
         # component as non-test-only code. In the static build, this code
         # should hopefully be dead-stripped.
         'edk/embedder/test_embedder.cc',
         'edk/embedder/test_embedder.h',
       ],
       'all_dependent_settings': {
         # Ensures that dependent projects import the core functions on Windows.
         'defines': ['MOJO_USE_SYSTEM_IMPL'],
@@ skipping 114 matching lines @@
         'mojo_public.gyp:mojo_public_test_support',
         'mojo_system_impl',
         'mojo_test_support_impl',
       ],
       'sources': [
         'edk/test/run_all_perftests.cc',
       ],
     },
   ],
 }