Linux: get us to the point where we crash at browser->window()->Show()

chrome/browser/browser_process_impl.cc

 // Copyright (c) 2006-2008 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/browser/browser_process_impl.h"
 
 #include "base/command_line.h"
 #include "base/path_service.h"
 #include "base/thread.h"
 #include "base/waitable_event.h"
@@ skipping 297 matching lines @@
   io_thread_.swap(thread);
 }
 
 void BrowserProcessImpl::CreateFileThread() {
   DCHECK(!created_file_thread_ && file_thread_.get() == NULL);
   created_file_thread_ = true;
 
   scoped_ptr<base::Thread> thread(
       new BrowserProcessSubThread(ChromeThread::FILE));
   base::Thread::Options options;
+#if defined(OS_WIN)
+  // On Windows, the FILE thread needs to be have a UI message loop which pumps
+  // messages in such a way that Google Update can communicate back to us.
   options.message_loop_type = MessageLoop::TYPE_UI;
+#else
+  options.message_loop_type = MessageLoop::TYPE_IO;
+#endif
   if (!thread->StartWithOptions(options))
     return;
   file_thread_.swap(thread);
 }
 
 void BrowserProcessImpl::CreateDBThread() {
   DCHECK(!created_db_thread_ && db_thread_.get() == NULL);
   created_db_thread_ = true;
 
   scoped_ptr<base::Thread> thread(
@@ skipping 50 matching lines @@
   // TODO(port): remove this completely, it has no business being here.
 #endif
 }
 
 void BrowserProcessImpl::CreateGoogleURLTracker() {
   DCHECK(google_url_tracker_.get() == NULL);
   scoped_ptr<GoogleURLTracker> google_url_tracker(new GoogleURLTracker);
   google_url_tracker_.swap(google_url_tracker);
 }