Adding MOJO_HANDLE_SIGNAL_PEER_CLOSED to be notified when a peer is closed.

mojo/edk/js/core.cc

 // Copyright 2014 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.
 
 #include "mojo/edk/js/core.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "gin/arguments.h"
 #include "gin/array_buffer.h"
@@ skipping 270 matching lines @@
             .SetValue("RESULT_UNAVAILABLE", MOJO_RESULT_UNAVAILABLE)
             .SetValue("RESULT_DATA_LOSS", MOJO_RESULT_DATA_LOSS)
             .SetValue("RESULT_BUSY", MOJO_RESULT_BUSY)
             .SetValue("RESULT_SHOULD_WAIT", MOJO_RESULT_SHOULD_WAIT)
 
             .SetValue("DEADLINE_INDEFINITE", MOJO_DEADLINE_INDEFINITE)
 
             .SetValue("HANDLE_SIGNAL_NONE", MOJO_HANDLE_SIGNAL_NONE)
             .SetValue("HANDLE_SIGNAL_READABLE", MOJO_HANDLE_SIGNAL_READABLE)
             .SetValue("HANDLE_SIGNAL_WRITABLE", MOJO_HANDLE_SIGNAL_WRITABLE)
+            .SetValue("HANDLE_SIGNAL_PEER_CLOSED",
+                      MOJO_HANDLE_SIGNAL_PEER_CLOSED)
 
             .SetValue("CREATE_MESSAGE_PIPE_OPTIONS_FLAG_NONE",
                       MOJO_CREATE_MESSAGE_PIPE_OPTIONS_FLAG_NONE)
 
             .SetValue("WRITE_MESSAGE_FLAG_NONE", MOJO_WRITE_MESSAGE_FLAG_NONE)
 
             .SetValue("READ_MESSAGE_FLAG_NONE", MOJO_READ_MESSAGE_FLAG_NONE)
             .SetValue("READ_MESSAGE_FLAG_MAY_DISCARD",
                       MOJO_READ_MESSAGE_FLAG_MAY_DISCARD)
 
@@ skipping 15 matching lines @@
             .Build();
 
     data->SetObjectTemplate(&g_wrapper_info, templ);
   }
 
   return templ->NewInstance();
 }
 
 }  // namespace js
 }  // namespace mojo