Thread::Stop() must be called before any subclass's destructor completes.

chrome/browser/ui/views/shell_dialogs_win.cc

 // Copyright (c) 2011 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/ui/shell_dialogs.h"
 
 #include <windows.h>
 #include <commdlg.h>
 #include <shlobj.h>
 
@@ skipping 365 matching lines @@
 }
 
 }  // namespace
 
 // Helpers to show certain types of Windows shell dialogs in a way that doesn't
 // block the UI of the entire app.
 
 class ShellDialogThread : public base::Thread {
  public:
   ShellDialogThread() : base::Thread("Chrome_ShellDialogThread") { }
+  ~ShellDialogThread() {
+    Stop();
+  }
 
  protected:
   void Init() {
     // Initializes the COM library on the current thread.
     CoInitialize(NULL);
   }
 
   void CleanUp() {
     // Closes the COM library on the current thread. CoInitialize must
     // be balanced by a corresponding call to CoUninitialize.
@@ skipping 555 matching lines @@
       }
     }
   }
   return success;
 }
 
 // static
 SelectFileDialog* SelectFileDialog::Create(Listener* listener) {
   return new SelectFileDialogImpl(listener);
 }