[mojo-edk] Fix shutdown with old EDK.

mojo/edk/embedder/embedder.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/embedder/embedder.h"
 
 #include <stdint.h>
 
 #include "base/bind.h"
 #include "base/location.h"
@@ skipping 11 matching lines @@
 
 namespace mojo {
 namespace edk {
 
 class Core;
 class PlatformSupport;
 
 namespace internal {
 
 Core* g_core;
-base::TaskRunner* g_io_thread_task_runner;
 PlatformSupport* g_platform_support;
 ProcessDelegate* g_process_delegate;
 
 // This is used to help negotiate message pipe connections over arbitrary
 // platform channels. The embedder needs to know which end of the pipe it's on
 // so it can do the right thing.
 //
 // TODO: Remove this when people stop using mojo::embedder::CreateChannel()
 // and thus mojo::edk::CreateMessagePipe(ScopedPlatformHandle).
 bool g_is_parent_process = true;
@@ skipping 51 matching lines @@
 
 MojoResult PassWrappedPlatformHandle(MojoHandle platform_handle_wrapper_handle,
                                      ScopedPlatformHandle* platform_handle) {
   return internal::g_core->PassWrappedPlatformHandle(
       platform_handle_wrapper_handle, platform_handle);
 }
 
 void InitIPCSupport(ProcessDelegate* process_delegate,
                     scoped_refptr<base::TaskRunner> io_thread_task_runner) {
   CHECK(internal::g_core);
-  CHECK(!internal::g_io_thread_task_runner);
-  internal::g_io_thread_task_runner = io_thread_task_runner.get();
-  internal::g_io_thread_task_runner->AddRef();
-
   internal::g_core->SetIOTaskRunner(io_thread_task_runner);
   internal::g_process_delegate = process_delegate;
 }
 
 void ShutdownIPCSupportOnIOThread() {
 }
 
 void ShutdownIPCSupport() {
   CHECK(internal::g_process_delegate);
   CHECK(internal::g_core);
@@ skipping 36 matching lines @@
 }
 
 std::string GenerateRandomToken() {
   char random_bytes[16];
   crypto::RandBytes(random_bytes, 16);
   return base::HexEncode(random_bytes, 16);
 }
 
 }  // namespace edk
 }  // namespace mojo