Remove mojo::edk::test::ScopedIPCSupport

mojo/edk/system/core.cc

 // 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.
 
 #include "mojo/edk/system/core.h"
 
 #include <string.h>
 
 #include <utility>
 
@@ skipping 314 matching lines @@
     *num_bytes = platform_shared_buffer->GetNumBytes();
   if (read_only)
     *read_only = platform_shared_buffer->IsReadOnly();
   *shared_memory_handle = platform_shared_buffer->DuplicateSharedMemoryHandle();
 
   shm_dispatcher->Close();
   return result;
 }
 
 void Core::RequestShutdown(const base::Closure& callback) {
-  base::Closure on_shutdown;
-  if (base::ThreadTaskRunnerHandle::IsSet()) {
-    on_shutdown = base::Bind(base::IgnoreResult(&base::TaskRunner::PostTask),
-                             base::ThreadTaskRunnerHandle::Get(),
-                             FROM_HERE, callback);
-  } else {
-    on_shutdown = callback;
-  }
-  GetNodeController()->RequestShutdown(on_shutdown);
+  GetNodeController()->RequestShutdown(callback);
 }
 
 ScopedMessagePipeHandle Core::CreateMessagePipe(
     ScopedPlatformHandle platform_handle) {
 #if defined(OS_NACL)
   NOTREACHED();
   return ScopedMessagePipeHandle();
 #else
   ports::PortRef port0, port1;
   GetNodeController()->node()->CreatePortPair(&port0, &port1);
@@ skipping 841 matching lines @@
     std::unique_ptr<NodeController> node_controller) {
   // It's OK to leak this reference. At this point we know the IO loop is still
   // running, and we know the NodeController will observe its eventual
   // destruction. This tells the NodeController to delete itself when that
   // happens.
   node_controller.release()->DestroyOnIOThreadShutdown();
 }
 
 }  // namespace edk
 }  // namespace mojo