Revert 201837 "OOP import on Windows."

trunk/src/chrome/utility/profile_import_handler.cc

 // Copyright (c) 2012 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 "chrome/utility/profile_import_handler.h"
 
 #include "base/bind.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/threading/thread.h"
@@ skipping 31 matching lines @@
   if (!importer_) {
     Send(new ProfileImportProcessHostMsg_Import_Finished(false,
         "Importer could not be created."));
     return;
   }
 
   items_to_import_ = items;
 
   // Create worker thread in which importer runs.
   import_thread_.reset(new base::Thread("import_thread"));
-#if defined(OS_WIN)
-  import_thread_->init_com_with_mta(false);
-#endif
-  if (!import_thread_->Start()) {
+  base::Thread::Options options;
+  options.message_loop_type = base::MessageLoop::TYPE_IO;
+  if (!import_thread_->StartWithOptions(options)) {
     NOTREACHED();
     ImporterCleanup();
   }
   import_thread_->message_loop()->PostTask(
       FROM_HERE, base::Bind(&Importer::StartImport, importer_.get(),
                             source_profile, items, bridge_));
 }
 
 void ProfileImportHandler::OnImportCancel() {
   ImporterCleanup();
@@ skipping 15 matching lines @@
   import_thread_.reset();
   content::UtilityThread::Get()->ReleaseProcessIfNeeded();
 }
 
 // static
 bool ProfileImportHandler::Send(IPC::Message* message) {
   return content::UtilityThread::Get()->Send(message);
 }
 
 }  // namespace chrome