Break dependency on core from generated mojom.js files

mojo/bindings/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/bindings/js/core.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "gin/arguments.h"
 #include "gin/array_buffer.h"
@@ skipping 202 matching lines @@
         .SetMethod("close", CloseHandle)
         .SetMethod("wait", WaitHandle)
         .SetMethod("waitMany", WaitMany)
         .SetMethod("createMessagePipe", CreateMessagePipe)
         .SetMethod("writeMessage", WriteMessage)
         .SetMethod("readMessage", ReadMessage)
         .SetMethod("createDataPipe", CreateDataPipe)
         .SetMethod("writeData", WriteData)
         .SetMethod("readData", ReadData)
 
-        // TODO(vtl): Change name of "kInvalidHandle", now that there's no such
-        // C++ constant?
-        .SetValue("kInvalidHandle", mojo::Handle())
-
         .SetValue("RESULT_OK", MOJO_RESULT_OK)
         .SetValue("RESULT_CANCELLED", MOJO_RESULT_CANCELLED)
         .SetValue("RESULT_UNKNOWN", MOJO_RESULT_UNKNOWN)
         .SetValue("RESULT_INVALID_ARGUMENT", MOJO_RESULT_INVALID_ARGUMENT)
         .SetValue("RESULT_DEADLINE_EXCEEDED", MOJO_RESULT_DEADLINE_EXCEEDED)
         .SetValue("RESULT_NOT_FOUND", MOJO_RESULT_NOT_FOUND)
         .SetValue("RESULT_ALREADY_EXISTS", MOJO_RESULT_ALREADY_EXISTS)
         .SetValue("RESULT_PERMISSION_DENIED", MOJO_RESULT_PERMISSION_DENIED)
         .SetValue("RESULT_RESOURCE_EXHAUSTED", MOJO_RESULT_RESOURCE_EXHAUSTED)
         .SetValue("RESULT_FAILED_PRECONDITION", MOJO_RESULT_FAILED_PRECONDITION)
@@ skipping 36 matching lines @@
         .Build();
 
     data->SetObjectTemplate(&g_wrapper_info, templ);
   }
 
   return templ->NewInstance();
 }
 
 }  // namespace js
 }  // namespace mojo